ISCs Public Benefit Secondary Name Service
Providing world-class authoritative name service
DNS, the Internet’s Domain Name Service, is the front door to all Internet services. You can’t use an Internet service unless you can find it, and you normally can’t find it without asking DNS to find it for you.
When you send email, your computer uses DNS to find the recipient’s computer. When you go to a web page, your computer uses DNS to find the computer holding that page. When your computer’s operating system wants to find out whether there are any software updates that need to be installed, it uses DNS to find the computers that provide updates.
DNS itself is not hardware or software but a protocol specification. It specifies the means by which clients make queries, and it specifies the process by which servers reply to those queries.
There are three main types of DNS components:
- DNS clients, which are inside smartphones and computers and tablets and such. They ask questions. In the vocabulary of DNS we say “they make queries”.
- DNS resolvers, which are server computers that look up the answers to client queries. Typically these server computers are provided by ISPs or corporate IT departments.
- DNS authoritative servers, which hold the answers that the resolvers are trying to find. Typically these servers are deployed by the owners of a domain who want customers to be able to find them.
What is SNS?
The initials SNS don’t really stand for anything. On occasion we have called it Secure Name Service, Solid Name Service, Slave Name Service, Secondary Name Service, and various other names. Now we just call it SNS.
In answer to the question “What is SNS?” there are several ways of looking at it:
- SNS copies out your DNS information from a source that you provide and then makes that DNS information available to the world on fast and reliable servers. If you update your source, SNS will track the update within minutes.
- SNS is an Enterprise grade slave DNS for power users that publishes your DNS data on a high-end global DNS platform.
- SNS is a set of anycast clouds, each on a different global network provider, that make your DNS information available worldwide from its cloud-based servers.
However you choose to look at it or think about it, ISC’s SNS is a DNS service that lets you stop worrying about the authoritative DNS offered for your domain.
SNS Feature List and Monitoring Solution
ISC’s SNS is a robust monitoring platform that is rich with features and functions. Among some of the features of SNS includes:
- SNS is built using ISC’s BIND. Not only is it the best product, it’s our product, so we are in a very good position to keep it current as new threats and new protocols emerge.
- SNS fully supports both IPv4 and IPv6.
- SNS fully supports DNSSEC (DNS Security Extensions).
- SNS has a Bulk API for installations that have a lot of zones and need more automation than the web interface provides.
- SNS provides per-zone statistics.
- SNS will automatically spot new editions of registered zones, even if you don’t tell it, by monitoring zone serial numbers.
- SNS offers threshold monitoring with alerts.