Serial Number Field

Back To Terms List

The Serial Number is the third field of an SOA record. Its purpose is to indicate which copy of the zone file is the most current, the primary name servers or the secondary name servers. If the Secondary nameserver's serial number is more than the Primary nameserver's serial number, a  transfer of the zone file from the primary authoritative nameserver to the secondary authoritative nameserver will take place.

See also:
SOA Record
Primary Nameserver
Secondary Nameserver


Managed DNS, Redundant DNS, and Remotely Hosted DNS with LoadDNS 8.0

Managed DNS maximizes site and application uptime and responsiveness. Manage all DNS records and take advantage of SiteFailover, Directional DNS, IP Anycast DNS, DNS Load balancingWeb forwarding and URL forwarding with Managed DNS Enterprise and Deluxe. Businesses seeking a low cost hosted DNS solution should take a look at Managed DNS Basic. LoadDNS is remotely hosted, which means no software to install or hardware to maintain. With DNS servers located around the world, an easy to use Web interface, and full control over zone files, LoadDNS is the top choice for hosted DNS. Designed to handle millions of queries, LoadDNS can seamlessly scale with your growing business. Looking for the best partner program on the web, become an affiliate and earn 50% commissions.