Dns updating slow

If the site is not listed in the records it queries registrars to find out who the DNS start of authority (SOA) is for your website.

If you're using your registrar's name server as your SOA, it looks up the "A" record for your domain and returns the IP address of the server listed.

Each ISP has their own time frame on how often they update/expire their cached DNS records.

Registries may protect their root nameservers from overuse by setting a high TTL of up to 48 hours or more for those NS records.Additionally, DNS Propagation is a rather inaccurate term used to describe the process of DNS resolution.The word "propagation" implies that DNS changes spread from DNS server to DNS server, and that you have no control over how quickly it happens.In fact, DNS servers check in with your local DNS server as needed, and the administrator of your local DNS server controls the 'time to live' (TTL) values for all DNS records in your domain.This page provides details on DNS Propagation, DNS Caching, TTL, Flushing DNS cache, and tools for checking propagation status.