`booking-system.eu`

DNSSEC	⚠️ Not signed
A	2a01:28:ca:72::100:195^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
		PTR	`lba.as4u.org`
A	88.86.100.195^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}
NS	`ns.as4u.org` ⭐
		A	2a01:28:ca:72::100:200^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
			PTR	`ns-01.as4u.org`
			PTR	`ns.as4u.org`
		A	88.86.100.200^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}
NS	`ns.as4u.cz`
		A	2a01:28:ca:72::100:250^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
			PTR	`ns.as4u.cz`
			PTR	`ns-02.as4u.org`
		A	88.86.100.250^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}
NS	`ns.district9.cz` ⚠️ Not in parent delegation
		A	2a03:3b40:fe:68f::1^{🇨🇿 MASTER-AS2a03:3b40::/40 VPSFREE-IPV6-PRG2}
			PTR	`ns.district9.cz`
		A	37.205.8.46^{🇨🇿 MASTER-AS37.205.8.0/22 RELBIT-VPSFREE}
			PTR	`ns.district9.cz`
MX	`mx-01.booking-system.eu` ⭐
		A	2a01:28:ca:72::100:231^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
			PTR	`mx-01.as4u.org`
		A	88.86.100.231^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}
MX	`mx-02.booking-system.eu`⁽¹⁰⁾
		A	2a01:28:ca:72::100:233^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
			PTR	`mx-02.as4u.org`
		A	88.86.100.233^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}
SOA	`ns.as4u.org`hostmaster@as4u.org 2018-08-24 #0

`eu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`si.dns.eu` ⭐
	NS	`be.dns.eu`
	NS	`w.dns.eu`
	NS	`x.dns.eu`
	NS	`y.dns.eu`
	SOA	`si.dns.eu`tech@eurid.eu serial=1123203640

Subdomains

mail.booking-system.eu

Same first word

booking-system.com

booking-system.net

booking-system.info

booking-system.cz

booking-system.co.uk

booking-system.dk

booking-system.de

booking-system.eu

booking-system.ch

DNS History

8 records (7 active, 1 former)

●NSns.as4u.cz2015-07-18 → 2026-04-12 · 2 obs

● 2015-07-18 12:38:34
● 2026-04-12 21:37:56

●NSns.as4u.org2015-07-18 → 2026-04-12 · 2 obs

● 2015-07-18 12:38:34
● 2026-04-12 21:37:56

●NSns.district9.cz2017-04-08 → 2026-04-12 · 3 obs

○ 2015-07-18 12:38:34
● 2017-04-08 16:30:32
● 2026-04-12 21:37:56

○MXmailin.booking-system.eu2015-07-18 → 2016-07-14 · 4 obs

● 2015-07-18 12:38:34
● 2016-07-14 21:39:10
○ 2017-04-08 16:30:32
○ 2026-04-12 21:37:56

●MXmx-01.booking-system.eu2017-04-08 → 2026-04-12 · 3 obs

○ 2016-07-14 21:39:10
● 2017-04-08 16:30:32
● 2026-04-12 21:37:56

●MXmx-02.booking-system.eu2017-04-08 → 2026-04-12 · 3 obs

○ 2016-07-14 21:39:10
● 2017-04-08 16:30:32
● 2026-04-12 21:37:56

●A2a01:28:ca:72::100:1952017-04-08 → 2026-04-12 · 3 obs

○ 2015-07-18 12:38:34
● 2017-04-08 16:30:32
● 2026-04-12 21:37:56

●A88.86.100.1952015-07-18 → 2026-04-12 · 2 obs

● 2015-07-18 12:38:34
● 2026-04-12 21:37:56

🔍 DNS Trace

Analysis

Hierarchy

booking-system.eu is the parent of mail.booking-system.eu.

IP Addresses

booking-system.eu resolves to two IP numbers: 2a01:28:ca:72::100:195 and 88.86.100.195.

Other host names, for instance pojisteni-online.cz, mtrebova.cz, liberec-region.com, liberecky-kraj.com and lba.as4u.org share IP numbers with booking-system.eu.

Name Servers

booking-system.eu delegates to three name servers: ns.as4u.cz, ns.district9.cz and ns.as4u.org.

booking-system.eu shares some name servers with other domains, for example hkregion.eu, euroregiontour.cz, zapadni-cechy.cz, muzeumlitovel.cz and as4u.org.

These name servers are commonly used with the name servers ns.forpsi.net.

Host names with two IP numbers:

ns.as4u.cz: 2a01:28:ca:72::100:250 and 88.86.100.250

ns.district9.cz: 2a03:3b40:fe:68f::1 and 37.205.8.46

ns.as4u.org: 2a01:28:ca:72::100:200 and 88.86.100.200

Mail Servers

booking-system.eu is served by two mail servers: mx-01.booking-system.eu and mx-02.booking-system.eu.

Host names with two IP numbers:

mx-01.booking-system.eu points to: 2a01:28:ca:72::100:231 and 88.86.100.231; mx-02.booking-system.eu points to: 2a01:28:ca:72::100:233 and 88.86.100.233.

booking-system.eu - robtex.com