usc.sk - robtex.com

usc.sk

DNSSEC🔒 Signed (DS record present)
A77.78.104.3🇨🇿 CASABLANCA-AS77.78.96.0/20 Casablanca INT
PTRyurika.gransy.com
NSns2.gransy.com ⭐
A2001:19f0:6801:474:5400:1ff:fec5:8efb🇫🇷 AS-VULTR2001:19f0:6800::/38 Vultr Assigned Prefix
A2001:19f0:7401:81e0:5400:1ff:fec5:8ef6🇬🇧 AS-VULTR2001:19f0:7400::/38 Vultr Assigned Prefix
A95.179.192.121🇬🇧 AS-VULTR95.179.192.0/20 Vultr Assigned Prefix
PTR95.179.192.121.vultrusercontent.com
A217.16.185.221🇨🇿 VSHOSTING217.16.176.0/20 III.
PTRns2.gransy.com
A217.69.4.49🇫🇷 AS-VULTR217.69.0.0/20 Vultr Assigned Prefix
PTR217.69.4.49.vultrusercontent.com
NSns.gransy.com
A2001:19f0:5001:1caf:5400:1ff:fec5:8d50🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix
A45.76.90.43🇩🇪 AS-VULTR45.76.80.0/20 Vultr Assigned Prefix
PTR45.76.90.43.vultrusercontent.com
A77.78.104.149🇨🇿 CASABLANCA-AS77.78.96.0/20 Casablanca INT
PTRns.gransy.com
A95.179.136.180🇳🇱 AS-VULTR95.179.128.0/20 Vultr Assigned Prefix
PTR95.179.136.180.vultrusercontent.com
NSns3.gransy.com
A2a02:750:7::2e7🇸🇪 GLESYS2a02:750::/29
PTR2a02-750-7--2e7-static.glesys.net
A2a02:750:8::32🇳🇱 GLESYS2a02:750:8::/48 GleSYS AB
PTR2a02-750-8--32-static.glesys.net
A46.21.100.103🇳🇱 GLESYS46.21.100.0/24 GleSYS AB
PTR46-21-100-103-static.glesys.net
A77.78.126.35🇨🇿 CASABLANCA-AS77.78.124.0/22 Casablanca INT
A109.74.7.71🇸🇪 GLESYS109.74.0.0/20
PTR109-74-7-71-static.glesys.net
NSns4.gransy.com
A2001:19f0:5401:69b:5400:1ff:fec5:8f3f🇺🇸 AS-VULTR2001:19f0:5400::/38 Vultr Assigned Prefix
A2a00:1a28:2010:1::89🇳🇴 GLESYS2a00:1a28::/32 Portlane Network
PTR2a00-1a28-2010-1--89-static.glesys.net
A66.42.94.136🇺🇸 AS-VULTR66.42.80.0/20 Vultr Assigned Prefix
PTR66.42.94.136.vultrusercontent.com
A80.67.7.209🇳🇴 GLESYS80.67.0.0/20 Portlane Network
PTR80-67-7-209-static.glesys.net
NSns5.gransy.com
A2a02:750:5::538🇸🇪 GLESYS2a02:750::/29
PTR2a02-750-5--538-static.glesys.net
A31.192.227.223🇸🇪 GLESYS31.192.224.0/21
PTR31-192-227-223-static.glesys.net
MXmail.usc.sk ⭐
TXTv=spf1 a mx include:gransy.com
SOAns.gransy.comroot@gransy.com serial=2753309137

sk

DNSSEC🔒 Signed (DS record present)
NSm.tld.sk ⭐
NSe.tld.sk
NSf.tld.sk
NSg.tld.sk
NSh.tld.sk
SOAm.tld.skhostmaster@sk-nic.sk serial=2018563464

Subdomains

mail.usc.sk

Same first word

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scu.se
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scu.ru
scu.com.ua
ucs.br
suc.io
cus.jp
ucs.co.za
ucs.de
suc.info
suc.co.za
csu.net

DNS History

18 records (7 active, 11 former)

20162017201820192020202120222023202420252026NSns.gransy.comns2.gransy.comns3.gransy.comns4.gransy.comns5.gransy.comns1.dnsbackup.netns1.nameserver.skns2.dnsbackup.netns2.nameserver.skMXmail.usc.skas.mx-hub.netas.mx-hub.skmailin.mx-hub.czmailin.mx-hub.eumailin.mx-hub.netmailin.mx-hub.skA77.78.104.3217.67.31.109
●NSns.gransy.com2026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50
○NSns1.dnsbackup.net2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○NSns1.nameserver.sk2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○NSns2.dnsbackup.net2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
●NSns2.gransy.com2026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50
○NSns2.nameserver.sk2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
●NSns3.gransy.com2026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50
●NSns4.gransy.com2026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50
●NSns5.gransy.com2026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50
○MXas.mx-hub.net2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○MXas.mx-hub.sk2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
●MXmail.usc.sk2026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50
○MXmailin.mx-hub.cz2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○MXmailin.mx-hub.eu2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○MXmailin.mx-hub.net2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○MXmailin.mx-hub.sk2015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
○A217.67.31.1092015-06-21 → 2016-12-12 · 4 obs
● 2015-06-21 02:56:12
● 2016-12-12 13:58:36
○ 2017-01-25 10:30:26
○ 2026-06-24 07:09:50
●A77.78.104.32026-06-15 → 2026-06-24 · 3 obs
○ 2017-01-25 10:30:26
● 2026-06-15 14:50:54
● 2026-06-24 07:09:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
skg.tld.sk, e.tld.sk, f.tld.sk, h.tld.sk8 records
usc.skns4.gransy.com, ns3.gransy.com, ns.gransy.com, ns2.gransy.com...-

✅ Authoritative Response

Server:95.179.136.180

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1832ms | Queries: -

📄 Records

TypeCountSample Data
A177.78.104.3
NS5ns2.gransy.com, ns.gransy.com...
MX1mail.usc.sk (pri: 10)
TXT1v=spf1 a mx include:gransy.com
SOA1ns.gransy.com root.gransy.com

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (e.tld.sk, f.tld.sk, g.tld.sk...)

Analysis

Hierarchy

usc.sk serves as the parent of mail.usc.sk.

IP Addresses

usc.sk resolves to one IP address: 77.78.104.3.

tokencc.com, karbyn.cz, ivanet.de and two other host names share IP numbers with usc.sk.

Name Servers

usc.sk has five name servers, which are ns2.gransy.com, ns3.gransy.com, ns4.gransy.com and two others.

usc.sk has at least partial name server overlap with other domains, such as codeco.cz, inas.pro, pitachleb.cz and two others.

It is common to find these name servers alongside the name servers ns.gransy.com, ns5.gransy.com, ns2.internetserver.cz and two others.

Hostnames pointing to five IP numbers:

ns2.gransy.com resolves to four IP addresses: 95.179.192.121, 217.16.185.221, 217.69.4.49 and two others.

ns3.gransy.com resolves to four IP addresses: 46.21.100.103, 77.78.126.35, 109.74.7.71 and two others.

Hosts that point to four IP numbers:

ns4.gransy.com has four IP addresses: 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 has four IP addresses: 45.76.90.43, 77.78.104.149, 95.179.136.180 and 2001:19f0:5001:1caf:5400:1ff:fec5:8d50.

Hostnames that resolve to two IP addresses:

The A records for ns5.gransy.com return 31.192.227.223 and 2a02:750:5::538.

Mail Servers

Mail for usc.sk is handled by a single mail server, mail.usc.sk.