21stg.com - robtex.com
21stg.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Subdomains
Same first word
21stg.com |
Similar names
DNS History
7 records (6 active, 1 former)
●NSns1.websupport.sk2017-09-28 → 2026-03-24 · 2 obs
● 2026-03-24 11:51:56
●NSns2.websupport.sk2017-09-28 → 2026-03-24 · 2 obs
● 2026-03-24 11:51:56
●NSns3.websupport.sk2017-09-28 → 2026-03-24 · 2 obs
● 2026-03-24 11:51:56
●MXmailin1.21stg.com2017-09-28 → 2026-03-24 · 2 obs
● 2026-03-24 11:51:56
●MXmailin2.21stg.com2017-09-28 → 2026-03-24 · 2 obs
● 2026-03-24 11:51:56
○A37.9.175.132017-09-28 → 2017-09-28 · 2 obs
○ 2026-03-24 11:51:56
●A37.9.175.1322026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 11:51:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net... | - |
| 21stg.com | ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk | - |
✅ Authoritative Response
Server:185.71.159.12
NS records: ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21stg.com (unsigned zone)
⏱️ Timing
Total: 1460ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.132 |
| NS | 3 | ns1.websupport.sk, ns2.websupport.sk... |
| MX | 2 | mailin1.21stg.com (pri: 10), mailin2.21stg.com (pri: 100) |
| TXT | 2 | v=spf1 a mx include:_spf.m1.websupport.s, spf2.0/pra a mx include:_sid.m1.websuppo |
| SOA | 1 | ns1.websupport.sk admin.websupport.sk |
Analysis
Hierarchy
21stg.com is a parent of mailin2.21stg.com and mailin1.21stg.com.
IP Addresses
21stg.com resolves to one IP number: 37.9.175.132.
other host names including guhr.sk, mailinbackup1.imkinterier.sk, espuntik.sk, mailinbackup1.vzdelavaniearozvoj.sk and leonardo.winit.sk share IP numbers with 21stg.com.
Name Servers
21stg.com is delegated to three name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
21stg.com at least partially shares name servers with other domains, for instance icemakers.online, bibi.sk, elnec.it, hotelslovan.sk and ktrade.sk.
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
Two mail servers handle 21stg.com: mailin1.21stg.com and mailin2.21stg.com.
Host names with two IP numbers:
The host name mailin1.21stg.com points to 2a00:4b40:aaaa:2101:45:13:137:8 and 45.13.137.8; the host name mailin2.21stg.com points to 2a00:4b40:aaaa:2101:45:13:137:9 and 45.13.137.9.