`libus.pro`

DNSSEC	⚠️ Not signed
A	2a02:2b88:2:1aa::1^{🇨🇿 WEDOS2a02:2b88::/32 Internet, a.s.}
		PTR	`mail.valek.net`
A	89.221.212.170^{🇨🇿 WEDOS89.221.208.0/20 Internet, a.s.}
NS	`ns2.gransy.com` ⭐
		A	2001:19f0:6801:474:5400:1ff:fec5:8efb^{🇫🇷 AS-VULTR2001:19f0:6800::/38 Vultr Assigned Prefix}
		A	2001:19f0:7401:81e0:5400:1ff:fec5:8ef6^{🇬🇧 AS-VULTR2001:19f0:7400::/38 Vultr Assigned Prefix}
		A	95.179.192.121^{🇬🇧 AS-VULTR95.179.192.0/20 Vultr Assigned Prefix}
			PTR	`95.179.192.121.vultrusercontent.com`
		A	217.16.185.221^{🇨🇿 VSHOSTING217.16.176.0/20 III.}
			PTR	`ns2.gransy.com`
		A	217.69.4.49^{🇫🇷 AS-VULTR217.69.0.0/20 Vultr Assigned Prefix}
			PTR	`217.69.4.49.vultrusercontent.com`
NS	`ns.gransy.com`
		A	2001:19f0:5001:1caf:5400:1ff:fec5:8d50^{🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix}
		A	45.76.90.43^{🇩🇪 AS-VULTR45.76.80.0/20 Vultr Assigned Prefix}
			PTR	`45.76.90.43.vultrusercontent.com`
		A	77.78.104.149^{🇨🇿 CASABLANCA-AS77.78.96.0/20 Casablanca INT}
			PTR	`ns.gransy.com`
		A	95.179.136.180^{🇳🇱 AS-VULTR95.179.128.0/20 Vultr Assigned Prefix}
			PTR	`95.179.136.180.vultrusercontent.com`
NS	`ns3.gransy.com`
		A	2a02:750:7::2e7^{🇸🇪 GLESYS2a02:750::/29}
			PTR	`2a02-750-7--2e7-static.glesys.net`
		A	2a02:750:8::32^{🇳🇱 GLESYS2a02:750:8::/48 GleSYS AB}
			PTR	`2a02-750-8--32-static.glesys.net`
		A	46.21.100.103^{🇳🇱 GLESYS46.21.100.0/24 GleSYS AB}
			PTR	`46-21-100-103-static.glesys.net`
		A	77.78.126.35^{🇨🇿 CASABLANCA-AS77.78.124.0/22 Casablanca INT}
		A	109.74.7.71^{🇸🇪 GLESYS109.74.0.0/20}
			PTR	`109-74-7-71-static.glesys.net`
NS	`ns4.gransy.com`
		A	2001:19f0:5401:69b:5400:1ff:fec5:8f3f^{🇺🇸 AS-VULTR2001:19f0:5400::/38 Vultr Assigned Prefix}
		A	2a00:1a28:2010:1::89^{🇳🇴 GLESYS2a00:1a28::/32 Portlane Network}
			PTR	`2a00-1a28-2010-1--89-static.glesys.net`
		A	66.42.94.136^{🇺🇸 AS-VULTR66.42.80.0/20 Vultr Assigned Prefix}
			PTR	`66.42.94.136.vultrusercontent.com`
		A	80.67.7.209^{🇳🇴 GLESYS80.67.0.0/20 Portlane Network}
			PTR	`80-67-7-209-static.glesys.net`
NS	`ns5.gransy.com`
		A	2a02:750:5::538^{🇸🇪 GLESYS2a02:750::/29}
			PTR	`2a02-750-5--538-static.glesys.net`
		A	31.192.227.223^{🇸🇪 GLESYS31.192.224.0/21}
			PTR	`31-192-227-223-static.glesys.net`
MX	`5580b470f1cb6232.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	`5580b470f1cb6232.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`
TXT	`v=spf1 include:spf.seznam.cz -all`
SOA	`ns.gransy.com`root@gransy.com serial=2776762284

`pro`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.pro.afilias-nst.info` ⭐
	NS	`a2.pro.afilias-nst.info`
	NS	`b0.pro.afilias-nst.org`
	NS	`b2.pro.afilias-nst.org`
	NS	`c0.pro.afilias-nst.info`
	NS	`d0.pro.afilias-nst.org`
	SOA	`a0.pro.afilias-nst.info`hostmaster@donuts.email serial=1782283190

🔒 HSTS Preload (+subdomains)

Same first word

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DNS History

9 records (9 active, 0 former)

●NSns.gransy.com2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●NSns2.gransy.com2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●NSns3.gransy.com2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●NSns4.gransy.com2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●NSns5.gransy.com2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●MX5580b470f1cb6232.mx1.emailprofi.seznam.cz2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●MX5580b470f1cb6232.mx2.emailprofi.seznam.cz2026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●A2a02:2b88:2:1aa::12026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

●A89.221.212.1702026-03-20 → 2026-06-24 · 2 obs

● 2026-03-20 00:49:08
● 2026-06-24 07:37:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pro	a0.pro.afilias-nst.info, a2.pro.afilias-nst.info, b0.pro.afilias-nst.org, b2.pro.afilias-nst.org...	-
libus.pro	ns.gransy.com, ns2.gransy.com, ns5.gransy.com, ns4.gransy.com...	-

✅ Authoritative Response

Server:66.42.94.136

NS records: ns.gransy.com, ns2.gransy.com, ns5.gransy.com, ns4.gransy.com, ns3.gransy.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for libus.pro (unsigned zone)

⏱️ Timing

Total: 781ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`89.221.212.170`
AAAA	1	`2a02:2b88:2:1aa::1`
NS	5	`ns5.gransy.com, ns4.gransy.com...`
MX	2	`5580b470f1cb6232.mx2.emailprofi.seznam.c, 5580b470f1cb6232.mx1.emailprofi.seznam.c`
TXT	1	`v=spf1 include:spf.seznam.cz -all`
SOA	1	`ns.gransy.com root.gransy.com`

Analysis

IP Addresses

libus.pro points to the IP addresses 89.221.212.170 and 2a02:2b88:2:1aa::1

Two other host names, along with libusova.pro, regeneo.cz and mail.valek.net, also share IP numbers with libus.pro.

Name Servers

libus.pro delegates to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com and two others.

The name servers of libus.pro overlap at least partially with those of other domains — among them webstore.com.tr, googlemaps.sk, portfolioweb.eu and two more.

The name servers ns5.gransy.com, ns.gransy.com, ns2.internetserver.cz and two others are commonly seen in use alongside these name servers.

Host names directing to five IP addresses:

ns2.gransy.com has four IP addresses — 95.179.192.121, 217.16.185.221, 217.69.4.49 and two others.

ns3.gransy.com has four IP addresses — 46.21.100.103, 77.78.126.35, 109.74.7.71 and two others.

Host names that resolve to four IP numbers:

ns4.gransy.com resolves to 66.42.94.136, 80.67.7.209, 2001:19f0:5401:69b:5400:1ff:fec5:8f3f and 2a00:1a28:2010:1::89.

ns.gransy.com resolves to 45.76.90.43, 77.78.104.149, 95.179.136.180 and 2001:19f0:5001:1caf:5400:1ff:fec5:8d50.

Host names that have two IP addresses:

ns5.gransy.com resolves to two addresses: 31.192.227.223 and 2a02:750:5::538.