CF1762857909763-tsm20251109205412

DNSWHOIS.INFO - a4a.org

Search for IP or hostnames:

a4a.org checked at 2025-11-11T10:45:09.745Z 177ms 105/105/105 100% R:13 allDone:true timedOut:false

a4a.org

NSpdns91.ultradns.biz
A2610:a1:1015::7f 🇺🇸 Neustar
PTRpdns91.ultradns.biz
A156.154.66.91🇺🇸 Neustar
PTRpdns91.ultradns.biz
NSpdns91.ultradns.com
A2001:502:f3ff::7f 🇺🇸 Neustar
PTRpdns91.ultradns.com
A156.154.64.91🇺🇸 Neustar
PTRpdns91.ultradns.com
NSpdns91.ultradns.net
A2610:a1:1014::7f 🇺🇸 Neustar
PTRpdns91.ultradns.net
A156.154.65.91🇺🇸 Neustar
PTRpdns91.ultradns.net
NSpdns91.ultradns.org
A2001:502:4612::7f 🇺🇸 Neustar
PTRpdns91.ultradns.org
A156.154.67.91🇺🇸 Neustar
PTRpdns91.ultradns.org
MXa4a-org.mail.protection.outlook.com
A2a01:111:f403:c902::3 🇺🇸 Microsoft
PTRmail-sj0pr03cu01703.inbound.protection.outlook.com
A2a01:111:f403:f807::1 🇺🇸 Microsoft
PTRmail-co1pr21cu00101.inbound.protection.outlook.com
A2a01:111:f403:f912:: 🇺🇸 Microsoft
PTRmail-cy5pr03cu00200.inbound.protection.outlook.com
A2a01:111:f403:f913:: 🇺🇸 Microsoft
PTRmail-cy1pr03cu00100.inbound.protection.outlook.com
A52.101.8.34🇺🇸 Microsoft
PTRmail-dm2pr04cu00102.inbound.protection.outlook.com
A52.101.8.42🇺🇸 Microsoft
PTRmail-dm6pr03cu00402.inbound.protection.outlook.com
A52.101.40.4🇺🇸 Microsoft
PTRmail-cy5pr03cu00204.inbound.protection.outlook.com
A52.101.40.6🇺🇸 Microsoft
PTRmail-cy1pr03cu00106.inbound.protection.outlook.com

org

NSa0.org.afilias-nst.info
NSa2.org.afilias-nst.info
NSc0.org.afilias-nst.info
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSd0.org.afilias-nst.org

Starts with same word

Starts similarily

AI analysis

a4a.org is delegated to four name servers: pdns91.ultradns.biz, pdns91.ultradns.com, pdns91.ultradns.net and pdns91.ultradns.org.

a4a.org at least partially shares name servers with other domains such as dierotenbullen.com, redbullu.com, givemewings.tv, redbullflugtagjp.com and redbull.com.br.

These name servers are commonly used with ns15.ultradns2.com and ns15.ultradns2.org.

Host names with two IP numbers:

pdns91.ultradns.biz points to 2610:a1:1015::7f and 156.154.66.91

pdns91.ultradns.com points to 2001:502:f3ff::7f and 156.154.64.91

pdns91.ultradns.net points to 2610:a1:1014::7f and 156.154.65.91

pdns91.ultradns.org points to 2001:502:4612::7f and 156.154.67.91

a4a.org is handled by a single mail server, a4a-org.mail.protection.outlook.com.

a4a-org.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c902::3, 2a01:111:f403:f807::1, 2a01:111:f403:f912::, 2a01:111:f403:f913::, 52.101.8.34, 52.101.8.42, 52.101.40.4 and 52.101.40.6.

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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