CF1762078765955-tsm20251102073205

IPLIST.NET - 21st.com

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21st.com checked at 2025-11-02T10:19:25.941Z 490ms 95/95/95 100% R:16

21st.com

MXmxa-0028ab01.gslb.pphosted.com
A148.163.150.117🇺🇸 Proofpoint
PTRmx0a-0028ab01.pphosted.com
MXmxb-0028ab01.gslb.pphosted.com
A148.163.150.117🇺🇸 Proofpoint
PTRmx0a-0028ab01.pphosted.com
NSns1.a0.impervasecuredns.net
A2a02:e980:4::1 🇺🇸 Incapsula
A192.230.121.1🇺🇸 Incapsula
PTR192.230.121.1.ip.incapdns.net
NSns1.a1.impervasecuredns.net
A2a02:e980:5::1 🇺🇸 Incapsula
A192.230.122.1🇺🇸 Incapsula
PTR192.230.122.1.ip.incapdns.net
NSns1.a2.impervasecuredns.net
A2a02:e980:6::1 🇺🇸 Incapsula
A192.230.123.1🇺🇸 Incapsula
PTR192.230.123.1.ip.incapdns.net
A45.60.122.143🇺🇸 Incapsula
A45.60.132.143🇺🇸 Incapsula

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NSa.gtld-servers.net
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
rank #204595 globally
rank #110052 in the tld

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AI analysis

21st.com is a parent of ftp3.21st.com, autowebservice.21st.com, policy.21st.com, m.21st.com, sfprxy.21st.com and several other host names.

21st.com points to two IP numbers: 45.60.122.143 and 45.60.132.143.

Other host names, for instance nssystems.net, sosi.com, ucjourney.com, ns-systems.dk and sosi.jobs share IP numbers with 21st.com.

The delegation for 21st.com is handled by three name servers: ns1.a0.impervasecuredns.net, ns1.a1.impervasecuredns.net and ns1.a2.impervasecuredns.net.

21st.com at least partially shares name servers with other domains, for instance aeroportsdeparis.fr, octoclicks.co.id, farmersclaimscareers.com, farmersbillings.com and bahco.com.

Two IP numbers per host:

ns1.a0.impervasecuredns.net points to 2a02:e980:4::1 and 192.230.121.1.

ns1.a1.impervasecuredns.net points to 2a02:e980:5::1 and 192.230.122.1.

ns1.a2.impervasecuredns.net points to 2a02:e980:6::1 and 192.230.123.1.

21st.com is handled by two mail servers: mxa-0028ab01.gslb.pphosted.com and mxb-0028ab01.gslb.pphosted.com.

21st.com uses the same mail server configuration as other domains, such as bristolwest.com, foremost.com, hpcs.com, toggle.com and farmershawaii.com.

21st.com shares some mail servers with other domains at least partially, for example hiinsconsultants.com.

Host names sharing a single IP:

mxa-0028ab01.gslb.pphosted.com points to 148.163.150.117

mxb-0028ab01.gslb.pphosted.com points to 148.163.150.117

Host names that point to 148.163.150.117: mxa-0028ab01.gslb.pphosted.com and mxb-0028ab01.gslb.pphosted.com

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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