CF1758430834705-tsm20250920190613

NSLIST.NET - 21.4.in-addr.arpa

Search for IP or hostnames:

21.4.in-addr.arpa checked at 2025-09-21T05:00:34.693Z 112ms 42/42/42 100% R:15

21.4.in-addr.arpa

NSdnsauth1.sys.gtei.net
A4.2.49.2🇺🇸 Lumen AS3356
PTRdnsauth1.level3.net
NSdnsauth2.sys.gtei.net
A4.2.49.3🇺🇸 Lumen AS3356
PTRdnsauth2.level3.net
NSdnsauth3.sys.gtei.net
A4.2.49.4🇺🇸 Lumen AS3356
PTRdnsauth3.level3.net

4.in-addr.arpa

NSr.arin.net
NSu.arin.net
NSx.arin.net
NSy.arin.net
NSz.arin.net
NSarin.authdns.ripe.net

Up

Starts with same word

Starts similarily

AI analysis

21.4.in-addr.arpa is the parent of 138.21.4.in-addr.arpa, 103.21.4.in-addr.arpa, 3.21.4.in-addr.arpa, 213.21.4.in-addr.arpa, 205.21.4.in-addr.arpa and a few other host names.

21.4.in-addr.arpa is delegated to three name servers dnsauth1.sys.gtei.net, dnsauth2.sys.gtei.net and dnsauth3.sys.gtei.net.

21.4.in-addr.arpa at least partially shares name servers with other domains, for instance 2.22.4.in-addr.arpa, 119.78.198.in-addr.arpa, 211.47.4.in-addr.arpa, 197.34.4.in-addr.arpa and 109.4.in-addr.arpa.

Host names with one IP number: dnsauth1.sys.gtei.net points to 4.2.49.2; dnsauth2.sys.gtei.net points to 4.2.49.3; dnsauth3.sys.gtei.net points to 4.2.49.4.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
dbq

CXXwKlL CF johedugfp 2025-09-21