`php53.io.cz`

DNSSEC	⚠️ Not signed
A	2a01:430:d:0:2cc:1bff:fe51:3ea8^{🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ}
		PTR	`php53.io.cz`
A	83.167.232.247^{🇨🇿 MASTER-AS83.167.224.0/19 MASTER-NET-5}

`io.cz`

	DNSSEC	⚠️ Not signed
	A	89.203.160.25^{🇨🇿 CDT-AS89.203.128.0/17 CD-Telematika a.s. The Czech Republic}
	NS	`ns.io.cz` ⭐
	NS	`ns.vu.cz`
	MX	`mx1.io.cz` ⭐
	TXT	`google-site-verification=HbMP51uupI9fUr9pguJgdh2eTKeXQUbbtWxIJek7zpQ`
	TXT	`v=spf1 include:_spf.chl.cz include:_spfv6.chl.cz include:_spf.io.cz -all`
	SOA	`ns.io.cz`hostmaster@io.cz 2026-04-24 #1

PTR for

247.232.167.83.in-addr.arpa

8.a.e.3.1.5.e.f.f.f.b.1.c.c.2.0.0.0.0.0.d.0.0.0.0.3.4.0.1.0.a.2.ip6.arpa

DNS History

2 records (2 active, 0 former)

●A2a01:430:d:0:2cc:1bff:fe51:3ea82015-07-13 → 2026-04-30 · 2 obs

● 2015-07-13 22:35:38
● 2026-04-30 21:54:18

●A83.167.232.2472015-07-13 → 2026-04-30 · 2 obs

● 2015-07-13 22:35:38
● 2026-04-30 21:54:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
io.cz	ns.io.cz, ns.vu.cz	3 records

✅ Authoritative Response

Server:82.142.83.92

NS records: ns.io.cz, ns.vu.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for io.cz (unsigned zone)

⏱️ Timing

Total: 772ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`83.167.232.247`
AAAA	1	`2a01:430:d:0:2cc:1bff:fe51:3ea8`

📌 Glue Records Collected

Total: 3

In-bailiwick: 2 (ns.io.cz, ns.io.cz)

Out-of-bailiwick: 1 (ns.vu.cz)

Analysis

IP Addresses

Two IP numbers are pointed to by php53.io.cz: 2a01:430:d:0:2cc:1bff:fe51:3ea8 and 83.167.232.247.

Other host names, for instance audioatelier.cz and eugenius.cz, share IP numbers with php53.io.cz.

php53.io.cz - robtex.com

php53.io.cz

io.cz