How it works
Explainer: why are there only 13 DNS root server groups?
This target is one of the DNS root servers. A deep dive into the 512-byte UDP limit, the protocol history that fixed the count at 13, and how a thousand-plus anycast mirrors carry global resolution.
A-root · Verisign, Inc. · Virginia, US · 53 anycast sites
Find all public domains hosted on a given IPv4, aggregated and deduplicated across multiple sources.