CF1760457674753-tsm20251012143351

NSLIST.NET - postmasterclass.com

Search for IP or hostnames:

postmasterclass.com checked at 2025-10-14T16:01:14.737Z 415ms 100/100/100 100% R:13

postmasterclass.com

NSsdns34.ultradns.biz
A2610:a1:1003::22 🇺🇸 Neustar
PTRsdns34.ultradns.biz
A156.154.142.34🇺🇸 Neustar
PTRsdns34.ultradns.biz
NSsdns34.ultradns.com
A2610:a1:1001::22 🇺🇸 Neustar
PTRsdns34.ultradns.com
A156.154.140.34🇺🇸 Neustar
PTRsdns34.ultradns.com
NSsdns34.ultradns.net
A2610:a1:1002::22 🇺🇸 Neustar
PTRsdns34.ultradns.net
A156.154.141.34🇺🇸 Neustar
PTRsdns34.ultradns.net
NSsdns34.ultradns.org
A2610:a1:1004::22 🇺🇸 Neustar
PTRsdns34.ultradns.org
A156.154.143.34🇺🇸 Neustar
PTRsdns34.ultradns.org
MXmxa-001a3c01.gslb.pphosted.com
A67.231.153.114🇺🇸 Proofpoint
PTRmx0b-001a3c01.pphosted.com
MXmxb-001a3c01.gslb.pphosted.com
A67.231.148.195🇺🇸 Proofpoint
PTRmx0a-001a3c01.pphosted.com
A174.129.15.191🇺🇸 Amazon
PTRec2-174-129-15-191.compute-1.amazonaws.com

com

NSa.gtld-servers.net
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NSd.gtld-servers.net
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NSm.gtld-servers.net

Starts with same word

Starts similarily

AI analysis

postmasterclass.com resolves to a single IP address: 174.129.15.191.

Other host names, for instance ec2-174-129-15-191.compute-1.amazonaws.com, share IP numbers with postmasterclass.com.

postmasterclass.com is delegated to four name servers: sdns34.ultradns.biz, sdns34.ultradns.com, sdns34.ultradns.net and sdns34.ultradns.org.

postmasterclass.com at least partially shares name servers with other domains, including servicealley.com, thelily.com, shopdcmagazine.com, shopdc.com and digitalink.com.

Hosts with two IP numbers:

Host sdns34.ultradns.biz points to 2610:a1:1003::22 and 156.154.142.34

Host sdns34.ultradns.com points to 2610:a1:1001::22 and 156.154.140.34

Host sdns34.ultradns.net points to 2610:a1:1002::22 and 156.154.141.34

Host sdns34.ultradns.org points to 2610:a1:1004::22 and 156.154.143.34

postmasterclass.com is handled by two mail servers: mxa-001a3c01.gslb.pphosted.com and mxb-001a3c01.gslb.pphosted.com.

postmasterclass.com shares its mail server setup with other domains, including digitalink.com, wecasa.com, e.washingtonpost.com, strollaround.com and zeustechnology.com.

postmasterclass.com shares some mail servers with other domains, for example newhomesguide.com and gwpi.net.

These mail servers are commonly used alongside email.newhomesguide.com and mail.newhomesguide.com.

Host names with a single IP:

mxa-001a3c01.gslb.pphosted.com points to 67.231.153.114.

mxb-001a3c01.gslb.pphosted.com points to 67.231.148.195.

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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