DNS Anycast

This article describes the setup of DNS Anycast in various implementation scenarios.

Garrett Saundry avatar
Written by Garrett Saundry
Updated over a week ago

Anycast synchronizes a domain's name servers with a distributed cloud of geographically redundant and fault tolerant servers around the world, providing enhanced performance and resilience against DNS-based DDOS attacks.

Our Anycast DNS is designed in such a way that the Anycast name servers will be assigned to your domain name and service all DNS record requests for your domain. The source of the DNS records which Anycast uses will continue to be your existing name servers (which can be those of Webnames, or any other third party).

For more information about the features and benefits of this service, or to purchase Anycast DNS for your domain, please visit: https://www.webnames.ca/dns/anycast

SETUP AND CONFIGURATION

To configure and apply Anycast DNS to a domain name:

  1. Go to https://www.webnames.ca/login.aspx and login using your Webnames.ca Username and Password.

  2. Browse to Account > Domain List

  3. Click on the domain in question, leading to Domain Management

  4. Click on the Anycast DNS tab

SETUP FOR DOMAIN NAMES ALREADY UTILIZING WEBNAMES DNS SERVICES

The setup of Anycast DNS is divided into three steps

  1. Provision your DNS Zone into the Anycast network

  2. Confirm zone synchronization between Webnames authoritative name server and the Anycast service

  3. Apply the Anycast name servers to your domain name

SETUP FOR DOMAIN NAMES UTILIZING NON-WEBNAMES DNS SERVICES

The setup of Anycast DNS is divided into three steps

STEP 1

Enter both the name and IP address of the name server(s) you wish Anycast to slave to.

Click Apply

STEP 2

Configure the name server(s) defined in Step 1 to allow AXFR/IXFR zone file transfers from the following IP addresses:

  • 162.219.53.35 (IPv4) - 2620:10a:80d1:1053::135 (IPv6)

  • 162.219.53.235 (IPv4) - 2620:10a:80d4:1053::135 (IPv6)

  • 162.219.52.35 (IPv4) - 2620:10a:80d1:1053::235 (IPv6)

  • 162.219.52.235 (IPv4) - 2620:10a:80d4:1053::235 (IPv6)

In addition, you must allow DNS queries from the following IP address so that the status of your zone can periodically be confirmed by the monitoring server:

  • 162.219.53.178 (IPv4) - 2620:10a:80d4:1090::100 (IPv6).

Finally, adjust your SOA Expiry value accordingly. The SOA Expiry value needs to be set long enough to prevent Zone Expiration should an issue arise with the assigned primary name servers. We recommend that you use and expiry timer of at least two weeks (1209600).

Confirm that the page reports that a zone file transfer between your name server(s) and Anycast has been successful.

STEP 3

Assign the Anycast name servers to your domain. Click Activate to complete the setup.

Anycast DNS will now handle all public DNS queries for your domain.

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