CF1762734489454-tsm20251109205412

WWW.RTSAK.COM - 181.21.4.in-addr.arpa

Search for IP or hostnames:

181.21.4.in-addr.arpa checked at 2025-11-10T00:28:09.439Z 223ms 45/45/45 100% R:19 allDone:true timedOut:false

181.21.4.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

21.4.in-addr.arpa

NSdnsauth1.sys.gtei.net
NSdnsauth2.sys.gtei.net
NSdnsauth3.sys.gtei.net

Up

Starts with same word

Starts similarily

AI analysis

181.21.4.in-addr.arpa is a parent of 161.181.21.4.in-addr.arpa, 129.181.21.4.in-addr.arpa, 1.181.21.4.in-addr.arpa and 9.181.21.4.in-addr.arpa.

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

181.21.4.in-addr.arpa at least partially shares name servers with other domains, for instance coopbar.net, 17.239.192.in-addr.arpa, 7.4.in-addr.arpa, 183.16.195.in-addr.arpa and 8.4.in-addr.arpa.

These name servers are commonly used together with dns1.onlinemac.com, dns2.onlinemac.com and dns3.nwnet.net.

Host names with a single IP:

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.
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