CF1762766769150-tsm20251109205412

DNSWHOIS.INFO - 138.38.in-addr.arpa

Search for IP or hostnames:

138.38.in-addr.arpa checked at 2025-11-10T09:26:09.132Z 125ms 50/50/50 100% R:11 allDone:true timedOut:false

138.38.in-addr.arpa

NSauth1.dns.cogentco.com
A2001:550:1:a::d 🇺🇸 COGENT
PTRauth1.dns.cogentco.com
A66.28.0.14🇺🇸 COGENT
PTRauth1.dns.cogentco.com
NSauth2.dns.cogentco.com
A2001:550:1:b::d 🇺🇸 COGENT
PTRauth2.dns.cogentco.com
A66.28.0.30🇺🇸 COGENT
PTRauth2.dns.cogentco.com

38.in-addr.arpa

NSauth1.dns.cogentco.com
NSauth2.dns.cogentco.com

Up

Starts with same word

Starts similarily

AI analysis

The parent of 4.138.38.in-addr.arpa is 138.38.in-addr.arpa.

Two name servers auth1.dns.cogentco.com and auth2.dns.cogentco.com handle the delegation for 138.38.in-addr.arpa.

138.38.in-addr.arpa shares the same name server setup as other domains, for example 66.232.144.in-addr.arpa, jforward.com, 97.108.38.in-addr.arpa, 100.199.in-addr.arpa and 165.233.206.in-addr.arpa.

138.38.in-addr.arpa at least partially shares name servers with other domains, for example dradiowissen.de, kakadu.de, 83.193.38.in-addr.arpa, 114.231.67.in-addr.arpa and infonotice.org.

these name servers are commonly used with ns1.vodafone-ip.de, ns2.vodafone-ip.de, nsa.ups.com, nsb.ups.com, cbru.br.ns.els-gms.att.net and cmtu.mt.ns.els-gms.att.net.

Host names with two IP numbers:

auth1.dns.cogentco.com points to 2001:550:1:a::d and 66.28.0.14.

auth2.dns.cogentco.com points to 2001:550:1:b::d and 66.28.0.30.

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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