`supportedu.cz`

DNSSEC	🔒 Signed (DS record present)
A	2001:880:0:15::235^{🇩🇪 ONE-NETWORK2001:880::/32}
		PTR	`dw352.webglobe.com`
A	185.102.21.193^{🇨🇿 ONE-NETWORK185.102.21.0/24}
NS	`ns.forpsi.net` ⭐
		A	2001:15e8:101:1::c282^{🇨🇿 INTERNET-CZ2001:15e8::/32}
			PTR	`ns.forpsi.net`
		A	81.2.194.130^{🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s.}
			PTR	`ns.forpsi.net`
NS	`ns.forpsi.cz`
		A	2001:15e8:201:1::d1b9^{🇨🇿 INTERNET-CZ2001:15e8::/32}
			PTR	`ns.forpsi.cz`
		A	81.2.209.185^{🇨🇿 INTERNET-CZ81.2.209.0/24}
			PTR	`ns.forpsi.cz`
NS	`ns.forpsi.it`
		A	2a00:6d41:2:1::5^{🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network}
			PTR	`ns.forpsi.it`
		A	95.110.254.165^{🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network}
			PTR	`host165-254-110-95.serverdedicati.aruba.it`
MX	`b207611d5a26a0e3.mx1.emailprofi.seznam.cz` ⭐
		A	2a02:598:2::1056^{🇨🇿 SEZNAM-CZ2a02:598:2::/48}
			PTR	`wildcard.mx1.emailprofi.seznam.cz`
		A	77.75.77.56^{🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III}
			PTR	`wildcard.mx1.emailprofi.seznam.cz`
MX	`b207611d5a26a0e3.mx2.emailprofi.seznam.cz`⁽²⁰⁾
		A	2a02:598:2::1146^{🇨🇿 SEZNAM-CZ2a02:598:2::/48}
			PTR	`wildcard.mx2.emailprofi.seznam.cz`
		A	77.75.77.146^{🇨🇿 SEZNAM-CZ77.75.76.0/23 SEZNAM - III}
			PTR	`wildcard.mx2.emailprofi.seznam.cz`
SOA	`ns.forpsi.net`admin@forpsi.com 2026-04-09 #1

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1776046654

Subdomains

mail.supportedu.cz

Same first word

supportedu.cz

Similar names

edusupport.dk

edusupport.net

edusupport.ru

edusupport.nl

DNS History

9 records (7 active, 2 former)

●NSns.forpsi.cz2015-06-20 → 2026-04-13 · 2 obs

● 2015-06-20 06:20:12
● 2026-04-13 03:03:24

●NSns.forpsi.it2015-06-20 → 2026-04-13 · 2 obs

● 2015-06-20 06:20:12
● 2026-04-13 03:03:24

●NSns.forpsi.net2015-06-20 → 2026-04-13 · 2 obs

● 2015-06-20 06:20:12
● 2026-04-13 03:03:24

●MXb207611d5a26a0e3.mx1.emailprofi.seznam.cz2026-03-13 → 2026-04-13 · 3 obs

○ 2017-03-24 05:34:40
● 2026-03-13 06:23:02
● 2026-04-13 03:03:24

●MXb207611d5a26a0e3.mx2.emailprofi.seznam.cz2026-03-13 → 2026-04-13 · 3 obs

○ 2017-03-24 05:34:40
● 2026-03-13 06:23:02
● 2026-04-13 03:03:24

○MXmail.supportedu.cz2015-06-20 → 2017-03-24 · 4 obs

● 2015-06-20 06:20:12
● 2017-03-24 05:34:40
○ 2026-03-13 06:23:02
○ 2026-04-13 03:03:24

●A185.102.21.1932026-03-13 → 2026-04-13 · 3 obs

○ 2017-03-24 05:34:40
● 2026-03-13 06:23:02
● 2026-04-13 03:03:24

●A2001:880:0:15::2352026-03-13 → 2026-04-13 · 3 obs

○ 2017-03-24 05:34:40
● 2026-03-13 06:23:02
● 2026-04-13 03:03:24

○A37.157.197.512015-06-20 → 2017-03-24 · 4 obs

● 2015-06-20 06:20:12
● 2017-03-24 05:34:40
○ 2026-03-13 06:23:02
○ 2026-04-13 03:03:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
supportedu.cz	ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net	2 records

✅ Authoritative Response

Server:81.2.209.185

NS records: ns.forpsi.cz, ns.forpsi.it, ns.forpsi.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1370ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.102.21.193`
AAAA	1	`2001:880:0:15::235`
NS	3	`ns.forpsi.cz, ns.forpsi.it...`
MX	2	`b207611d5a26a0e3.mx1.emailprofi.seznam.c, b207611d5a26a0e3.mx2.emailprofi.seznam.c`
SOA	1	`ns.forpsi.net admin.forpsi.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.forpsi.cz, ns.forpsi.cz)

Analysis

Hierarchy

The parent of mail.supportedu.cz is supportedu.cz.

IP Addresses

supportedu.cz points to two IP numbers: 2001:880:0:15::235 and 185.102.21.193.

Other host names such as lkza.cz, delipizza.cz, www27.skok.cz, osiva-hb.cz and lfleur.cz share IPs with supportedu.cz.

Name Servers

supportedu.cz is delegated to three name servers: ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.

supportedu.cz at least partially shares name servers with other domains, for example gallus.cz, celoznice.cz, terminus.cz, huss.hu and narodnapokladnica.sk.