sp21.sk - robtex.com
sp21.sk
sk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | m.tld.sk ⭐ | ||||||
| NS | e.tld.sk | ||||||
| NS | f.tld.sk | ||||||
| NS | g.tld.sk | ||||||
| NS | h.tld.sk | ||||||
| SOA | m.tld.skhostmaster@sk-nic.sk serial=2018504270 | ||||||
Subdomains
zilina.sp21.sk |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.websupport.sk2026-02-14 → 2026-04-13 · 2 obs
● 2026-04-13 16:35:04
●NSns2.websupport.sk2026-02-14 → 2026-04-13 · 2 obs
● 2026-04-13 16:35:04
●NSns3.websupport.sk2026-02-14 → 2026-04-13 · 2 obs
● 2026-04-13 16:35:04
●MXsp21-sk.mail.protection.outlook.com2026-02-14 → 2026-04-13 · 2 obs
● 2026-04-13 16:35:04
●A194.182.77.1952026-02-14 → 2026-04-13 · 2 obs
● 2026-04-13 16:35:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| sk | e.tld.sk, f.tld.sk, g.tld.sk, h.tld.sk | 8 records |
| sp21.sk | ns3.websupport.sk, ns2.websupport.sk, ns1.websupport.sk | 6 records |
✅ Authoritative Response
Server:185.71.159.12
NS records: ns3.websupport.sk, ns2.websupport.sk, ns1.websupport.sk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 364ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 194.182.77.195 |
| NS | 3 | ns1.websupport.sk, ns2.websupport.sk... |
| MX | 1 | sp21-sk.mail.protection.outlook.com (pri |
| TXT | 3 | v=spf1 include:spf.protection.outlook.co, facebook-domain-verification=dvblsbfqw4w... |
| SOA | 1 | ns1.websupport.sk admin.websupport.sk |
📌 Glue Records Collected
Total: 14
In-bailiwick: 8 (e.tld.sk, f.tld.sk, g.tld.sk...)
Out-of-bailiwick: 6 (ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk...)
Analysis
Hierarchy
The parent of zilina.sp21.sk is sp21.sk.
IP Addresses
sp21.sk points to an IP address: 194.182.77.195.
Other host names, for instance zilina.sp21.sk, share IP numbers with sp21.sk.
Name Servers
sp21.sk is delegated to three name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
sp21.sk at least partially shares name servers with other domains, for instance kosco.sk, kockac.sk, ululu.sk, ovko.net and techhouse.cz.
Host names with two IP numbers:
ns1.websupport.sk points to 2a10:bbc0::11 and 45.10.97.11; ns2.websupport.sk points to 2a02:250:3::12 and 185.71.159.12; ns3.websupport.sk points to 2a10:bbc0::13 and 45.10.97.13.
Mail Servers
sp21.sk is handled by a single mail server, sp21-sk.mail.protection.outlook.com.
Hostname sp21-sk.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:ca04::1, 2a01:111:f403:ca04::e, 2a01:111:f403:ca04::f, 2a01:111:f403:ca09::5, 52.101.68.16, 52.101.68.29, 52.101.73.8 and 52.101.73.19.