`postuj.com`

DNSSEC	🔒 Signed (DS record present)
A	2a00:4b40:aaaa:2005::6^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
A	37.9.175.165^{🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24}
NS	`ns1.websupport.cz` ⭐
		A	2a10:bbc0::11^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns1.websupport.eu`
		A	45.10.97.11^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns1.websupport.eu`
NS	`ns2.websupport.cz`
		A	2a02:250:3::12^{🇸🇪 ACTIVE24-AS2a02:250:3::/48}
			PTR	`ns2.websupport.eu`
		A	185.71.159.12^{🇸🇪 ACTIVE24-AS185.71.159.0/24}
			PTR	`ns2.websupport.eu`
NS	`ns3.websupport.eu`
		A	2a10:bbc0::13^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns3.websupport.eu`
		A	45.10.97.13^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns3.websupport.eu`
MX	`mx10.active24.cz` ⭐
		A	2a00:4b40:aaaa:2101:45:13:137:85^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
		A	45.13.137.85^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`mx10.active24.cz`
MX	`mx20.active24.cz`⁽¹⁰⁰⁾
		A	2a00:4b40:aaaa:2101:45:13:137:86^{🇸🇰 WEBSUPPORT-SRO-SK-AS2a00:4b40::/32}
		A	45.13.137.86^{🇸🇰 WEBSUPPORT-SRO-SK-AS45.13.137.0/24}
			PTR	`mx20.active24.cz`
TXT	`v=spf1 a mx include:_spf.websupport.cz -all`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1774533455

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776176182

Previously MX for

postuj.com

Same first word

postuj.pl

postuj.cz

postuj.com

Similar names

justop.com

jpotus.com

outsjp.com

justpo.st

justpo.sk

juspot.com

justop.ru

justop.com.cn

jsoptu.my

topjus.de

pojust.com

topjus.com

justop.net

justop.co.uk

josput.be

jpsuto.com

justpo.com

jsutop.com

DNS History

19 records (7 active, 12 former)

●NSns1.websupport.cz2026-04-09 → 2026-04-14 · 3 obs

○ 2017-02-13 22:30:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

●NSns2.websupport.cz2026-04-09 → 2026-04-14 · 3 obs

○ 2017-02-13 22:30:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

●NSns3.websupport.eu2026-04-09 → 2026-04-14 · 3 obs

○ 2017-02-13 22:30:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

○NSns557.hostgator.com2015-05-30 → 2016-03-06 · 4 obs

● 2015-05-30 03:31:08
● 2016-03-06 23:12:06
○ 2016-06-21 23:21:00
○ 2026-04-14 14:17:26

○NSns558.hostgator.com2015-05-30 → 2016-03-06 · 4 obs

● 2015-05-30 03:31:08
● 2016-03-06 23:12:06
○ 2016-06-21 23:21:00
○ 2026-04-14 14:17:26

○NSns63.domaincontrol.com2016-06-21 → 2016-06-21 · 4 obs

○ 2016-03-06 23:12:06
● 2016-06-21 23:21:00
○ 2017-02-13 22:30:22
○ 2026-04-14 14:17:26

○NSns64.domaincontrol.com2016-06-21 → 2016-06-21 · 4 obs

○ 2016-03-06 23:12:06
● 2016-06-21 23:21:00
○ 2017-02-13 22:30:22
○ 2026-04-14 14:17:26

○NSns8083.hostgator.com2015-05-30 → 2016-03-06 · 4 obs

● 2015-05-30 03:31:08
● 2016-03-06 23:12:06
○ 2016-06-21 23:21:00
○ 2026-04-14 14:17:26

○MXmailstore1.secureserver.net2016-06-21 → 2016-06-21 · 4 obs

○ 2016-03-06 23:12:06
● 2016-06-21 23:21:00
○ 2017-02-13 22:30:22
○ 2026-04-14 14:17:26

●MXmx10.active24.cz2026-04-09 → 2026-04-14 · 3 obs

○ 2017-02-13 22:30:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

●MXmx20.active24.cz2026-04-09 → 2026-04-14 · 3 obs

○ 2017-02-13 22:30:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

○MXpostuj.com2015-05-30 → 2016-03-06 · 4 obs

● 2015-05-30 03:31:08
● 2016-03-06 23:12:06
○ 2016-06-21 23:21:00
○ 2026-04-14 14:17:26

○MXsmtp.secureserver.net2016-06-21 → 2016-06-21 · 4 obs

○ 2016-03-06 23:12:06
● 2016-06-21 23:21:00
○ 2017-02-13 22:30:22
○ 2026-04-14 14:17:26

○A141.8.230.202017-02-13 → 2017-02-13 · 4 obs

○ 2016-06-21 23:21:00
● 2017-02-13 22:30:22
○ 2019-04-19 00:16:22
○ 2026-04-14 14:17:26

○A192.185.5.2322015-05-30 → 2016-03-06 · 4 obs

● 2015-05-30 03:31:08
● 2016-03-06 23:12:06
○ 2016-06-21 23:21:00
○ 2026-04-14 14:17:26

●A2a00:4b40:aaaa:2005::62026-04-09 → 2026-04-14 · 3 obs

○ 2019-04-19 00:16:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

●A37.9.175.1652026-04-09 → 2026-04-14 · 3 obs

○ 2019-04-19 00:16:22
● 2026-04-09 01:55:40
● 2026-04-14 14:17:26

○A50.63.202.362016-06-21 → 2016-06-21 · 4 obs

○ 2016-03-06 23:12:06
● 2016-06-21 23:21:00
○ 2017-02-13 22:30:22
○ 2026-04-14 14:17:26

○CNAMEpres.serverhome.com2017-02-13 → 2019-04-19 · 4 obs

● 2017-02-13 22:30:22
● 2019-04-19 00:16:22
○ 2026-04-09 01:55:40
○ 2026-04-14 14:17:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net...	-
postuj.com	ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu	-

✅ Authoritative Response

Server:45.10.97.11

NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 500ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.9.175.165`
AAAA	1	`2a00:4b40:aaaa:2005::6`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	2	`mx10.active24.cz (pri: 10), mx20.active24.cz (pri: 100)`
TXT	1	`v=spf1 a mx include:_spf.websupport.cz -`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

IP Addresses

postuj.com has two IP numbers: 2a00:4b40:aaaa:2005::6 and 37.9.175.165.

Other host names, for instance mail.galeoni.cz, pevi.cz, sejkora.cz, doksy.biz and dentalplanet.cz share IP numbers with postuj.com.

Name Servers

postuj.com is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

postuj.com at least partially shares name servers with other domains, including sokol-sim.com, sosvaz.cz, ringel.nu, deadsea.cz and olfa.cz.

These name servers are commonly used with ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.

Host names with two IP numbers:

ns1.websupport.cz: 2a10:bbc0::11 and 45.10.97.11

ns2.websupport.cz: 2a02:250:3::12 and 185.71.159.12

ns3.websupport.eu: 2a10:bbc0::13 and 45.10.97.13

Mail Servers

postuj.com is served by two mail servers mx10.active24.cz and mx20.active24.cz.

postuj.com shares the same mail server setup as other domains, for instance alfafit.cz, ibross.sk, welding-store.eu, albalak.cz and lfmodels.cz.

postuj.com shares at least some mail servers with other domains, for instance jezeksw.cz, ikos.cz and partnersoft.cz.

Host names with two IPs:

mx10.active24.cz points to 2a00:4b40:aaaa:2101:45:13:137:85 and 45.13.137.85

mx20.active24.cz points to 2a00:4b40:aaaa:2101:45:13:137:86 and 45.13.137.86

postuj.com - robtex.com

postuj.com

com

Previously MX for

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`postuj.com`

`com`