State of the Cloud DNS Report. Basic Edition April 2014

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State of the Cloud

DNS Report

Basic Edition

April 2014

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2 Overview

Introduction . . . 3

Anycast vs. Unicast DNS . . . 3

Provider Overview & Current News . . . 4

Provider Market Share . . . 7

Technology Used . . . 9

DNS Features

Health Checks - Failover . . . 11

Health Checks - Load Balancing . . . 11

Location Based Routing (Geo IP) . . . 12

Zone Based Routing (Anycast) . . . 12

DNSSEC . . . 13

Pricing

DNS Query Volume Pricing . . . 15

Feature Pricing . . . 16

DNS Propagation Latency

. . . 18

DNS Performance Analysis (January 2014)

Performance Analysis Overview . . . 20

Service Availability . . . 20

Synthetic DNS Response Time . . . 21

End-user DNS Response Time . . . 23

Akamai . . . 25 AWS Route 53 . . . 26 CloudFlare . . . 27 easyDNS . . . 28 DNS Made Easy . . . 29 Dyn . . . 30 Ultra DNS . . . 31

DNS Networks

Akamai . . . 33 AWS Route 53 . . . 34 CloudFlare . . . 35 DNS Made Easy . . . 37 Dyn . . . 38 easyDNS . . . 36 Ultra DNS . . . 39

3

Overview

Introduction . . . 4

Anycast vs. Unicast DNS . . . 4

Provider Overview & Current News . . . 5

Provider Market Share . . . 8

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At the network level, there are 2 methods of deploying DNS: Unicast and Anycast.

Unicast DNS

Anycast DNS has significant advantages over Unicast DNS. With Unicast DNS, information is routed to a single network destination, which is identified by a unique address; inherently, this means there is only one path data can take to reach its intended destination. Unicast methodology employs a one-to-one relationship between the destination address and the network endpoint — each destination address is only able to identify a single endpoint. If a Unicast DNS server goes down, name server resolution directed at it will be non-functional which may result in descreased performance and possibly service disruptions.

Anycast DNS

On the other hand, IP Anycast DNS provides multiple routes that queries can travel to reach their intended destination — there are a group of possible receivers, which are all identified by the same end destination address. Anycasting employs a one-to-one-to-many association; data is routed topologically to the nearest geographic node, which increases performance. Anycast DNS methodology also has the benefit of redundancy; if a DNS node goes down down, another can immediately take over and respond to queries for it. Anycasting replicates the same DNS data to multiple servers around the world, which also provides protection in the case of denial-of-service (DoS) attacks. In terms of reliability, speed, and security, Anycast DNS is generally a better choice.

DNS

_MADRID

LONDON

MIAMI

NEW YORK

_MADRID

LONDON

DNS DNS

MIAMI

NEW YORK

The Domain Name System (DNS) is the method by which meaningful hostnames such as “www.google.com” are translated into physical IP addresses needed by computers to communicate; DNS is fundamental to the operation of the Internet. If an organization loses its DNS capabilities, their hostnames will be inaccessible to users — even if the servers are functioning!

Additionally, DNS can be a potential security threat if hacked and hostnames are redirected to unauthorized servers. Because of the mission critical nature of DNS, many organizations have elected to outsource their DNS needs to providers that can typically ensure better availability, improved security, and faster performance.

Introduction

Overview

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5 Akamai

Akamai is based in Cambridge, MA. It was incorporated in 1998 after its founders developed a solution at MIT for improving Internet content delivery performance. It provides CDN services to one out of three Global 500 companies, and delivers 15-30% of all Web traffic. Yahoo! was its first customer, and many large media companies use the Akamai CDN. Additionally, Rackspace and HP resell Akamai CDN as part of their cloud offerings. Akamai has 3000+ employees, and revenue for 2012 was $1.374 billion. Akamai does not provide specific details about the location of CDN PoPs, but it has publicly disclosed the size of its CDN network as over 127,000 servers in 81 countries. In some cases, Akamai partners with ISPs to maintain edge servers within their data centers, thus decreasing ISP bandwidth costs while improving performance for end users. In addition to CDN, Akamai also offers managed DNS hosting. Key differentiators include the largest CDN network in the world, a track record supporting some of the largest media clients, and serving Internet content at a massive scale.

Amazon Web Services (AWS) Overview

AWS Route 53 is part of Amazon’s suite of cloud related services. Amazon was founded as an online bookstore in 1994 by Jeff Bezos, and the Amazon.com site launched in 1995. Amazon currently has 33,700 employees and earned $32.204 Billion dollars in revenue in 2010. It is speculated that AWS will be the first $1 billion cloud computing service.

CloudFlare

CloudFlare is a privately held company based in San Francisco, CA. It was founded in 2009 and announced the launch of its public beta at TechCrunch Disrupt in 2010. The founders are former engineers for Project Honey Pot, a system for identifying spammers. CloudFlare has raised over $22 million in funding since 2009. It has 35+ employees and unknown revenue. CloudFlare manages its own IP Anycast network consisting of 23 global points of presence (PoPs), with 10 in the US, 8 in Europe, 4 in Asia and 1 in Australia. Services include CDN, managed DNS, and some proprietary capabilities built on top of those services, including automated security and optimization. Key differentiators include extensive experience dealing with and mitigating DDoS attacks (including one of the largest attacks in Internet history, a 300 Gbps attack in 2013 against Spamhous); management of its own global IP Anycast network; a free starter plan; and seamless add-on capabilities, including automatic security and failover protection, and website optimization.

DNS Made Easy Overview

DNS Made Easy launched in 2002 and is a subsidiary of Tiggee LLC. DNS Made Easy processes more than five billion queries daily. DNS Made Easy’s parent company, Tiggee LLC was founded in 1999. DNS Made Easy offers a free 30 day trial of their services.

Provider Overview

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6 Dynamic Network Services (Dyn) Overview

Dyn originally began as a free service by a group of college students back in 1998, and officially became a company in 2001. They are now a leader in Internet performance solutions offering Traffic Management, Message Management and Performance Assurance for some of the leading brands on the web. Dyn’s headquarters are located in Manchester, NH and they have offices in San Francisco and Brighton, UK. Dyn has nearly 300 employees. In addition to DNS, Dyn also provides Email delivery service, API integration, DNSSEC and IPv6 support, active failover, as well as traffic balancing and load management.

easyDNS Overview

easyDNS is a Canada-based, private, self funded company in business since 1998. easyDNS has over 110,000 domains in more than 100 countries around the world, and processes approximately a quarter-billion DNS queries every day.

Provider Overview

UltraDNS Overview

Neustar has been in business since 1996 as a trusted, neutral provider of real-time information and analysis to the Internet, telecommunications, information services, financial services, retail, media and advertising sectors. In 1999, Neustar acquired UltraDNS and has continued to be a leader in the Enterprise Managed DNS ever since. In 2012, Neustar earned $831.4M (a 34% growth from 2011) and continues to expand its technology solutions through strategic acquisitions of Targus INFO (On-Demand Audience Target & Analysis), Evolving System (Number Solutions) and Aggregate Knowledge (Media Intelligence & Analytics).

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7 Alexa Top 1,000 Sites

Fortune 500

Alexa Top 10,000 Sites

To track market share, we mine the name servers for the Alexa top 10,000 sites monthly. Alexa tracks top sites based on number of visitors and traffic statistics and is generally seen as a reliable source for this data. The tables below provide market share snapshots for DNS providers based on our independent mining. We use two techniques to generate market share metrics - DNS hostname matching and class C IP matching. Non recursive query validations are used to verify the latter. Market share changes may be attributed to changes in the makeup of the Alexa top 10,000 sites or provider changes.

Provider Market Share

Overview

This content is available in the Premium Edition available at http://cloudharmony.com/reports

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8 Top 20 Provider Changes

As part of our Alexa market share analysis, we also track Alexa top 10,000 sites that have changed DNS providers since the previous month’s analysis. The following is a list of the top 20 websites (ordered by Alexa rank) that have changed providers in the past 4 months.

Market Share Growth/Loss

Overview

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9 DNS Software

DNS Software is the respond to queries requesting a hostname be transferred to an IP address. DNS providers can utilize off-the-shelf or proprietary software. Off-the-shelf software has the advantage of established stability and performance, while proprietary software can oftentimes provide better security and provide a point of distinction for vendors.

Provider Software Type

UltraDNS Proprietary

Dyn Bind

Route 53 djbdns

DNS Made Easy Proprietary (Elite Resolution Platform)

easyDNS Bind

Geo IP Database

In order to implement Geo-Targeted, Location Based DNS, providers will typically license Geo IP technology from one of two major vendors: MaxMind or Neustar IP Intelligence. These databases allow DNS providers to determine the geographic location of DNS resolvers (which are generally in the same geographic location as end-users), and provide a custom geo-targeted response. The following table provides a breakdown of the Geo IP technology used by each provider that supports this feature (Note: Anycast Zone Based DNS does not require this technology).

Provider Software Type

UltraDNS Neustar IP Intelligence1

Dyn Maxmind

Route 53 NA

DNS Made Easy NA

easyDNS NA

1. Both UltraDNS and Neustar IP Intelligence are part of the same parent company, Neustar 2. Cotendo uses a custom patched version of the Maxmind database

Technology Used

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DNS Features

Health Checks - Failover . . . 11

Health Checks - Load Balancing . . . 11

Location Routing (Geo IP) . . . 12

Zone Routing (Anycast) . . . 12

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based on the availability of target hosts. Hosts are monitored for availability using ICMP (Internet Control Message Protocol) or more advanced methods such as verifying that a HTTP server is functioning. If the primary host fails health checks, DNS can be automatically reconfigured to resolve to a backup host; routing is automatically restored to the primary host when it regains availability.

FAILOVER PRIMARY

DNS

UltraDNS Dyn Route 53 DNS Made

Easy

easyDNS



1

1. Only 15 minute monitoring intervals supported. For Enterprise plan, after 3 failover zones, fee is $5/zone/month.

Like DNS Failover, DNS Load Balancing monitors the status of DNS hosts. However, with Load Balancing there are no active and failover hosts — instead, all hosts receive evenly (or weighted) distributed traffic (weighted traffic distribution is an optional capability of this feature).

HOST 3 HOST 2

HOST 1

DNS

Easy

easyDNS





Health Checks

Failover

Health Checks

Load Balancing

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to resolve differently based on the user’s location (or more specifically, the user’s DNS resolver location). To accomplish this, the geographic location is determined using Geo IP technology like Neustar IP Intelligence or MaxMind. This location is then run through custom geographic DNS rules. For example, DNS could resolve to a server in Singapore for users in Asia and to a server in the US for all other users.

Easy

easyDNS



1



1. Route53 provides a unique DNS routing feature called “Latency Based Routing” wherein users are directed to an AWS endpoint with the lowest latency (endpoint must be in one of the 7 AWS regions).

Anycast Zone Based DNS is functionally similar to Location Based DNS. However, the former uses Anycast zones instead of Geo IP technology. In practice, this limits the number of definable location based rules definable to the number of provider Anycast zones. For example, Dyn’s Anycast Zone Based DNS (GSLB or CDN Manager) allows users to define up to 7 rules per hostname corresponding to each Dyn Anycast zone: US West, US Central, US East, EU West, EU Central, EU East and Asia. In this regard, Anycast Zone Based DNS is more restrictive than Geo Location Based DNS which may allow users to define rules based on individual states or even cities. Additionally, IP Anycast routing can be problematic in some areas like Asia resulting in incorrect responses (e.g. an Asia user may be routed to a US DNS server - and hence resolve to a US, not Asia rule).

Easy easyDNS



1



(7 Regions)





(BETA, 4 Regions)



(4 Regions) 1. Discontinued service in favor of more effective Directional (Location Based) services.

DNS DNS

WASHINGTON ,DC CALIFORNIA

Location Routing

(Geo IP)

Zone Routing

(Anycast)

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Extensions) is a specification for securing DNS information — DNSSEC was designed to protect clients from forged DNS responses. All responses in DNSSEC are digitally signed; by checking the digital signature, a DNS client is able to verify the information is exactly the same as the information from the authoritative DNS server. The DNSSEC standard is backwards compatible with DNS, clients that do not support it are not affected adversely. Although more and more organizations are now rolling out DNSSEC on their name servers, the actual number of signed zones is still very low.

Easy easyDNS Provider Managed





User Managed







Provider or User Managed DNSSEC

Manual generation and management of necessary DNSSEC certificates and digital signatures can be very complex and cumbersome. Some providers simplify this by automating these tasks within their management interface.

DNS CLIENT USER PROVIDER or

DNSSEC

DNS Features

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Pricing

DNS Query Volume Pricing. . . 15 Feature Pricing . . . 16

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DNS pricing for some vendors is often a black box. While some providers provide public pricing and self sign-up, others require contact and negotiation with sales executives. In the case of the latter, pricing can flucuate greatly depending on purchase size, negotiating prowness, the time of the quarter, and other extraneous factors.

The pricing matrix below provides a breakdown of estimated costs at various usage levels with each provider. To collect this information, we have independently researched and contacted vendors that do not disclose pricing publicly.

Pricing Per Month

1. $50 SMB plan uses fewer DNS POPs than Enterprise plans (currently 15 of 30 POPs 2. List price - discounting possible when purchased in conjunction with add-ons 3. Dyn Managed DNS Express - includes 1.2 million queries/month

4. Dyn changes based on 95th percentile queries per second (QPS). Pricing for fixed volumes in the table is estimated

5. Pre-paid annually 6. Enterprise Plan

7. Based on $125/mo corporate membership (includes 50 million queries) plus overages 8. Based on Enterprise plan and published overage rate - discounts may be available

Pricing

(January 2014)

DNS Query Pricing

Pricing

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1. Query surcharge for latency based routing - only target hosts in AWS data centers are supported. Query pricing reduces to $0.125/ million queries for volume above 1 billion queries/mo

2. UltraDNS refers to this feature as Sitebacker. Price is based on 10 million query bundle pricing (25% discount) with 2 monitored target hosts. Each additional target host is $113/mo ($150 without bundle discount) up to 5, then $90 up to 10, then $68

3. UltraDNS refers to this feature as Traffic Controller. Price is based on 10 million query bundled pricing (25% discount) with 3 monitored target hosts. Each additional IP is $188/mo ($250 without bundle discount) 4. Pricing based on 10 million query bundled pricing (25% discount) with up to 5 target hosts. Each additional target

host is $100/mo 5. Per hostname

6. Dyn refers to these features as Traffic Director 7. Zone Routing included with Load Balancing 8. Per hostname

9. Must prepay annually - the Business and Corporate plans include 3 and 10 failover hostnames respectively and up to 5 monitored target hosts using 2-4 minute monitoring intervals

10. Requires $60/yr business plan. $1500/yr Corporate plan includes 1 geo-targeted hostname at no additional charge

Each provider markets and prices the add-on features in this report slightly differently. In the matrix below, we’ve attempted to provide comparable pricing for each provider and feature; footnotes are included where applicable.

Pricing Per Month

Advanced Feature Pricing

(January 2014)

There is a lot to consider when comparing managed DNS providers. We’ve included what we believe to be a few relevant, objective and comparable evaluation criteria in this post and our new DNS report. Organizations should consider the criteria that are most relevant to them when evaluating providers.

Summary

Pricing

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DNS Propagation Latency

DNS Propagation Latency . . . 18

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DNS propagation latency is the amount of time required for a DNS change to be pushed to global provider POPs. Measurements are provided for both primary and secondary DNS zones (where secondary DNS hosting is supported). The latency measurement provided is a median of measurements from 120 test nodes.

DNS Propagation Latency

DNS Performance Analysis

Primary Zone

Secondary Zone

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DNS Performance Analysis

Performance Analysis Overview . . . 20

Service Availability . . . 20

Synthetic DNS Response Time . . . 21

End-user DNS Response Time . . . 23

Akamai. . . 25 AWS Route 53 . . . 26 CloudFlare . . . 27 DNS Made Easy . . . 28 Dyn . . . 29 easyDNS . . . 30 Ultra DNS . . . 31

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The performance analysis in this report is separated into 3 categories: service availability, synthetic response times, end-user DNS response times; this data is captured utilizing a combination of the CloudHarmony browser-based DNS test (http://cloudharmony.com/dnstest) and testing conducted using CloudHarmony’s network of 110 globally deployed monitoring nodes.

The following table provides service availability metrics for the prior month, and year to date (YTD). The metrics are based on the percentage of successful authoritative (non-recursive) queries made to provider DNS servers. Our network of 110 global monitoring nodes test DNS provider nameservers every 5 minutes using a random Alexa top 1000 site with DNS delegated to those providers. To eliminate false positives, if during a single test interval a node experiences 2 or more failures with different providers (indicating a potential network issue with the monitoring node), that test is aborted and the results discarded.

The tables below provide 2 availability metrics.The first metric represents the percentage of tests where at least 1 nameserver responded successfully to the monitoring nodes during each 5 minute check, and the second represents the same ratio for all nameservers (meaning all provider nameservers responded successfully). Most DNS clients support retry logic, and hence more emphasis should be placed on the first metric.

DNS Performance Analysis

Performance Analysis Overview

Service Availability

Service Availability of at

least 1 nameserver all nameserversAvailability of

AWS Route 53 100.000 99.6120 DNS Made Easy 99.9998 99.7173 Ultra DNS 99.9998 99.6952 Dyn 99.9995 99.6471 EasyDNS 99.9991 97.9812 CloudFlare 99.9631 99.1567 Akamai 99.9556 99.0999

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We monitor sythetic DNS response times using a combination of dig (a DNS utility) and our network of 110 global monitoring nodes. The purpose of this testing is to measure the amount of time it takes for provider DNS servers to respond to queries from these nodes. These measurements are taken every 5 minutes from

each monitoring node. During each test interval, multiple measurements are taken and the median, mean, min, max and standard deviation metrics are captured. The response times used in the graphs below are derived from the median values and aggregated into multiple geographic regions.

Synthetic DNS Response Time

DNS Performance Analysis

For DNS Response Time charts:

Outlined in green: Performance has improved since the previous report Outlined in red: Performance has declined since the previous report

North America: 57 Monitoring Nodes

Akamai DNS AWS Route 53 CloudFlare DNS DNS Made

Easy Dyn DNS Easy DNS UltraDNS 0 40 80 120 160 M ed ia n D N S L oo ku p (m s) US West US Central US East Canada Median

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22 Europe: 28 Monitoring Nodes

Other Regions: 25 Monitoring Nodes

Synthetic DNS Response Time

continued

DNS Performance Analysis

Easy Dyn DNS Easy DNS UltraDNS 0 30 60 90 120 M ed ia n D N S L oo ku p (m s) Western Europe Central Europe Eastern Europe Median

Easy Dyn DNS Easy DNS UltraDNS 0 100 200 300 400 M ed ia n D N S L oo ku p (m s) Asia/APAC Oceania South America Median

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To collect end-user DNS response time, we created a browser-based DNS test at: http://cloudharmony.com/dnstest. We allow users to run this test for free, and pay users to run it using Amazon’s Mechanical Turk. This test is also run using javascript tags on a few high traffic websites. To deploy this test, we delegated DNS for a domain with each DNS provider, and configured a wildcard DNS name (A) record for each. The test alternates downloading a 5 byte javascript file using cached and uncached random hostnames. End-User DNS response time is calculated as the difference between these measurements.

Multiple response time samples are taken during each end user test, and the median and standard deviation are captured. Outlier response times above

1 second are discarded. The response times used in the graphs below are derived from a 90th percentile of the median values aggregated into multiple geographic regions. The purpose of this section is to present DNS performance from an end-user’s perspective. This differs from synthetic response times in that it incorporates a more holistic, real-world metric that includes both DNS query time and latency between actual users and DNS provider nameservers (including the entire recursive DNS chain). The end-user response time heatmaps provide global performance analysis for individual providers. Regions are color coded according to the average performance in that region. Green indicates faster and red slower DNS response times for users within those regions.

North America

DNS Performance Analysis

End-User DNS Response Time

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24 Europe

Other Regions

DNS Performance Analysis

End-User DNS Response Time

continued

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25 DNS Performance Analysis

End-User DNS Response Time

Akamai

This chart provides global performance analysis. Regions are color coded according to the average performance in that region. Green indicates faster and red slower DNS response times for users within those regions.

Region Median Mean Std Dev Number

of Tests US West 146.68 171.67 386.99 99008 US Central 82.81 108.62 244.09 27908 US East 51.74 100.79 304.39 86145 Canada 79.11 152.77 377.39 373322 Western Europe 45.21 160.77 452.33 74755 Central Europe 65.25 214.06 407.1 66227 Eastern Europe 34.29 55.17 241.79 3187 Asia/APAC 92.3 138.84 316.21 100957 Oceania 133.35 148.12 284.54 41951 South America 307.81 285.02 269.54 2303

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26 DNS Performance Analysis

End-User DNS Response Time

AWS Route 53

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27 DNS Performance Analysis

End-User DNS Response Time

CloudFlare

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28 DNS Performance Analysis

End-User DNS Response Time

DNS Made Easy

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29 DNS Performance Analysis

End-User DNS Response Time

Dyn

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30 DNS Performance Analysis

End-User DNS Response Time

easyDNS

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31 DNS Performance Analysis

End-User DNS Response Time

UltraDNS

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DNS Networks

AWS Route 53 . . . 34 CloudFlare . . . 35 DNS Made Easy . . . 36 Dyn . . . 37 easyDNS . . . 38 Ultra DNS . . . 39

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533

Akamai

Provider Network

Akamai

DNS Networks

Akamai has not disclosed specific locations of DNS POPs. Akamai maintains 20 Anycast DNS clusters each with different POPs and customers are assigned to a subset of these.

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533

AWS Route 53

Provider Network

AWS Route 53

DNS Networks

City Country

Sydney Australia São Paulo Brazil Hong Kong (2) China Marseille France Paris (2) France Frankfurt (3) Germany London (3) Great Britain Chennai India Mumbai India Dublin Ireland Milan Italy Osaka Japan Tokyo (2) Japan Seoul Korea Amsterdam (2) Netherlands Warsaw Poland Singapore (2) Singapore City Country Madrid Spain Stockholm Sweden Ashburn, VA (3) United States Atlanta, GA United States Dallas, TX (2) United States Hayward, CA United States Jacksonville, FL United States Los Angeles, CA (2) United States Miami, FL United States New York, NY (3) United States Newark, NJ United States Palo Alto, CA United States San Jose, CA United States Seattle, WA United States South Bend, IN United States St Louis, MO United States

AWS Route 53

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533

CLOUDFLARE

Provider Network

CloudFlare

DNS Networks

City Country Vienna Austria Sydney Australia Toronto Canada Valparaiso Colombia Prague Czech Republic Frankfurt Germany Paris France London England Hong Kong Hong Kong Tokyo Japan Seoul South Korea Amsterdam Netherlands Warsaw Poland

City Country

Stockholm Sweden Singapore Singapore Los Angeles, CA United States San Jose, CA United States Washington, DC United States Miami, FL United States Atlanta, GA United States Chicago, IL United States Newark, NJ United States Dallas, TX United States Ashburn, VA United States Seattle, WA United States

CloudFlare

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36 DNS MADE EASY

DNS Networks

City Country Sydney Australia Frankfurt Germany London Great Britain Hong Kong Hong Kong Los Angeles, CA United States San Jose, CA United States Miami, FL United States Chicago, IL United States New York, NY United States Dallas, TX United States Ashburn, VA United States Reston, VA United States

DNS Made Easy

12 POPs

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37 DYN

DNS Networks

City Country Sydney Australia Sao Paulo Brazil Frankfurt Germany London Great Britain Hong Kong Hong Kong Mumbai India Tokyo Japan Amsterdam Netherlands Warsaw Poland Singapore Singapore Los Angeles, CA United States Palo Alto, CA United States Miami, FL United States Chicago, IL United States North Bergen, NJ United States Dallas, TX United States Ashburn, VA United States Seattle, WA United States

Dyn

18 POPs

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38 EASY DNS

DNS Networks

EasyDNS

17 POPs City Country Sydney Australia Paris France London Great Britain Hong Kong Hong Kong Tokyo Japan Amsterdam Netherlands Phoenix, AZ United States Los Angeles, CA United States Palo Alto, CA United States San Francisco, CA United States San Jose, CA United States Washington, DC United States Miami, FL United States Chicago, IL United States Ashburn, VA United States Seattle, WA United States Zurich Switzerland

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39 Ultra DNS

DNS Networks

City Country Sydney Australia Sao Paulo Brazil Toronto Canada Vancouver Canada Beijing China Bogota Colombia Paris France Frankfurt Germany London Great Britain Hong Kong Hong Kong Mumbai India Dublin Ireland Tokyo Japan Amsterdam Netherlands Singapore Singapore City Country

Johannesburg South Africa Madrid Spain Taipei Taiwan Phoenix, AZ United States Los Angeles, CA United States San Jose, CA United States Denver, CO United States Miami, FL United States Atlanta, GA United States Chicago, IL United States Minneapolis, MN United States New York, NY United States Dallas, TX United States Ashburn, TX United States Seattle, WA United States

UltraDNS

30 POPs

State of the Cloud DNS Report. Basic Edition April 2014