4pst.us - robtex.com

4pst.us

DNSSEC⚠️ Not signed
A40.76.218.33🇺🇸 Microsoft40.76.0.0/14
NSaxfr.dnsimple.com ⭐
A2600:1f16:ae2:e902:6881:5f5e:c245:887e🇺🇸 Amazon2600:1f16:800::/38 AMAZON AWS
A18.189.127.127🇺🇸 Amazon18.189.0.0/16 EC2 CMH prefix
PTRec2-18-189-127-127.us-east-2.compute.amazonaws.com
NSns1.dnsimple.com
A2400:cb00:2049:1::a29f:1804🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
PTRns1.dnsimple.com
A162.159.24.4Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.dnsimple.com
NSns2.dnsimple-edge.net
A2620:111:8005::53🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route
A199.247.153.53🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route
NSns3.dnsimple.com
A2400:cb00:2049:1::a29f:1a04🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
PTRns3.dnsimple.com
A162.159.26.4Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns3.dnsimple.com
NSns4.dnsimple-edge.org
A2620:111:8007::53🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route
A199.247.155.53🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route
NSns5.dnsmadeeasy.com
A2600:1800:5::1🇺🇸 Tiggee2600:1800:5::/48 DNS Made Easy anycast network
PTRns5.dnsmadeeasy.com
A208.94.148.13🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network
PTRns5.dnsmadeeasy.com
NSns6.dnsmadeeasy.com
A2600:1801:6::1🇺🇸 Tiggee2600:1801:6::/48 DNS Made Easy anycast network
PTRns6.dnsmadeeasy.com
A208.80.124.13🇺🇸 Tiggee208.80.124.0/24 DNS Made Easy anycast network
PTRns6.dnsmadeeasy.com
NSns7.dnsmadeeasy.com
A2600:1802:7::1🇺🇸 Tiggee2600:1802:7::/48 DNS Made Easy anycast network
PTRns7.dnsmadeeasy.com
A208.80.126.13🇺🇸 Tiggee208.80.126.0/24 DNS Made Easy anycast network
PTRns7.dnsmadeeasy.com
MX4pst-us.mail.protection.outlook.com ⭐
A2a01:111:f403:c927::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-bn8pr05cu00301.inbound.protection.outlook.com
A2a01:111:f403:c946::6🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-ch5pr02cu00406.inbound.protection.outlook.com
A2a01:111:f403:f802::3🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sj0pr03cu01403.inbound.protection.outlook.com
A2a01:111:f403:f901::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-mn2pr04cu00200.inbound.protection.outlook.com
A52.101.9.24🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bl2pr02cu00400.inbound.protection.outlook.com
A52.101.10.2🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bn8pr03cu00202.inbound.protection.outlook.com
A52.101.50.1🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-co1pr05cu00401.inbound.protection.outlook.com
A52.101.50.10🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-mw2pr02cu00502.inbound.protection.outlook.com
TXTALIAS for ps-shorturl.azurewebsites.net
TXTMS=ms80168151
TXTps-shorturl.azurewebsites.net
TXTv=spf1 include:spf.protection.outlook.com -all
SOAaxfr.dnsimple.comadmin@dnsimple.com serial=2013028159

us

DNSSEC🔒 Signed (DS record present)
NSa.cctld.us ⭐
NSb.cctld.us
NSf.cctld.us
NSk.cctld.us
NSm.cctld.us
NSn.cctld.us
NSw.cctld.us
NSx.cctld.us
NSy.cctld.us
SOAa.cctld.usadmin@tldns.godaddy serial=1774570608

Same first word

4pst.us

Similar names

4tps.co.uk
4spt.com
st4p.com
pt4s.com
pt4s.in
pst4.jp
tp4s.com
4pts.online
pt4s.net
t4sp.com
pt4s.de

DNS History

13 records (10 active, 3 former)

20162017201820192020202120222023202420252026NSaxfr.dnsimple.comns1.dnsimple.comns2.dnsimple-edge.netns3.dnsimple.comns4.dnsimple-edge.orgns5.dnsmadeeasy.comns6.dnsmadeeasy.comns7.dnsmadeeasy.comns2.dnsimple.comns4.dnsimple.comMX4pst-us.mail.protection.outlook.comA40.76.218.33168.62.164.139
●NSaxfr.dnsimple.com2026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
●NSns1.dnsimple.com2015-07-22 → 2026-03-27 · 2 obs
● 2015-07-22 23:41:58
● 2026-03-27 00:32:26
●NSns2.dnsimple-edge.net2026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
○NSns2.dnsimple.com2015-07-22 → 2016-07-24 · 4 obs
● 2015-07-22 23:41:58
● 2016-07-24 03:39:28
○ 2026-03-01 02:53:26
○ 2026-03-27 00:32:26
●NSns3.dnsimple.com2015-07-22 → 2026-03-27 · 2 obs
● 2015-07-22 23:41:58
● 2026-03-27 00:32:26
●NSns4.dnsimple-edge.org2026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
○NSns4.dnsimple.com2015-07-22 → 2016-07-24 · 4 obs
● 2015-07-22 23:41:58
● 2016-07-24 03:39:28
○ 2026-03-01 02:53:26
○ 2026-03-27 00:32:26
●NSns5.dnsmadeeasy.com2026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
●NSns6.dnsmadeeasy.com2026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
●NSns7.dnsmadeeasy.com2026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
●MX4pst-us.mail.protection.outlook.com2026-03-01 → 2026-03-27 · 2 obs
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26
○A168.62.164.1392015-07-22 → 2016-07-24 · 4 obs
● 2015-07-22 23:41:58
● 2016-07-24 03:39:28
○ 2026-03-01 02:53:26
○ 2026-03-27 00:32:26
●A40.76.218.332026-03-01 → 2026-03-27 · 3 obs
○ 2016-07-24 03:39:28
● 2026-03-01 02:53:26
● 2026-03-27 00:32:26

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usb.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us...-
4pst.usns1.dnsimple.com, ns7.dnsmadeeasy.com, ns4.dnsimple-edge.org, ns2.dnsimple-edge.net...-

✅ Authoritative Response

Server:208.80.124.13

NS records: ns1.dnsimple.com, ns7.dnsmadeeasy.com, ns4.dnsimple-edge.org, ns2.dnsimple-edge.net, ns3.dnsimple.com, ns5.dnsmadeeasy.com, ns6.dnsmadeeasy.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4pst.us (unsigned zone)

⏱️ Timing

Total: 532ms | Queries: -

📄 Records

TypeCountSample Data
A140.76.218.33
NS7ns1.dnsimple.com, ns2.dnsimple-edge.net...
MX14pst-us.mail.protection.outlook.com (pri
TXT4ALIAS for ps-shorturl.azurewebsites.net, MS=ms80168151...
SOA1axfr.dnsimple.com admin.dnsimple.com

Analysis

IP Addresses

4pst.us points to a single IP number: 40.76.218.33.

Other host names, for instance maijkers.com, packmage.net, mailman.andrewsfcu.org, qpim-tx.com and postal.mcleanengineering.com share IP numbers with 4pst.us.

Name Servers

4pst.us is delegated to eight name servers: axfr.dnsimple.com, ns1.dnsimple.com, ns3.dnsimple.com, ns5.dnsmadeeasy.com, ns6.dnsmadeeasy.com, ns7.dnsmadeeasy.com, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org.

4pst.us at least partially shares name servers with other domains, for instance rightgoodtees.com, legomangaming.com, amdos.mx, storeframe.dev and rowanfoundation.org.

These name servers are commonly used together with the name servers ns2.dnsimple.com, ns4.dnsimple.com, ns100.digicertdns.com, ns101.digicertdns.com, ns102.digicertdns.com, burst.aramark.com, surge.aramark.com, dns1.p09.nsone.net, dns1.p03.nsone.net and dns1.p07.nsone.net.

Host names with two IP numbers:

axfr.dnsimple.com points to 2600:1f16:ae2:e902:6881:5f5e:c245:887e and 18.189.127.127.

ns1.dnsimple.com points to 2400:cb00:2049:1::a29f:1804 and 162.159.24.4.

ns3.dnsimple.com points to 2400:cb00:2049:1::a29f:1a04 and 162.159.26.4.

ns5.dnsmadeeasy.com points to 2600:1800:5::1 and 208.94.148.13.

ns6.dnsmadeeasy.com points to 2600:1801:6::1 and 208.80.124.13.

ns7.dnsmadeeasy.com points to 2600:1802:7::1 and 208.80.126.13.

ns2.dnsimple-edge.net points to 2620:111:8005::53 and 199.247.153.53.

ns4.dnsimple-edge.org points to 2620:111:8007::53 and 199.247.155.53.

Mail Servers

4pst.us is handled by a single mail server, 4pst-us.mail.protection.outlook.com.

4pst-us.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:c927::1, 2a01:111:f403:c946::6, 2a01:111:f403:f802::3, 2a01:111:f403:f901::, 52.101.9.24, 52.101.10.2, 52.101.50.1 and 52.101.50.10.