21mar.com - robtex.com
21mar.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 37.9.175.211🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.175.0/24 | ||||||
| NS | ns1.websupport.cz ⭐ | ||||||
| A | 2a10:bbc0::11🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns1.websupport.eu | ||||||
| A | 45.10.97.11🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns1.websupport.eu | ||||||
| NS | ns2.websupport.cz | ||||||
| A | 2a02:250:3::12🇸🇪 ACTIVE24-AS2a02:250:3::/48 | ||||||
| PTR | ns2.websupport.eu | ||||||
| A | 185.71.159.12🇸🇪 ACTIVE24-AS185.71.159.0/24 | ||||||
| PTR | ns2.websupport.eu | ||||||
| NS | ns3.websupport.eu | ||||||
| A | 2a10:bbc0::13🇨🇿 ACTIVE24-AS2a10:bbc0::/32 | ||||||
| PTR | ns3.websupport.eu | ||||||
| A | 45.10.97.13🇨🇿 ACTIVE24-AS45.10.97.0/24 | ||||||
| PTR | ns3.websupport.eu | ||||||
| SOA | ns1.websupport.czadmin@websupport.cz serial=1755594460 | ||||||
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=1777182256 | ||||||
Previously MX for
21mar.com |
Same first word
21mar.com |
Similar names
DNS History
11 records (4 active, 7 former)
○NSns-eu09.mithrilnetwork.com2017-03-14 → 2017-03-14 · 4 obs
● 2017-03-14 03:24:12
○ 2026-04-14 06:15:48
○ 2026-04-26 05:51:14
○NSns-eu10.mithrilnetwork.com2017-03-14 → 2017-03-14 · 4 obs
● 2017-03-14 03:24:12
○ 2026-04-14 06:15:48
○ 2026-04-26 05:51:14
○NSns1.21mar.com2015-12-13 → 2016-07-06 · 4 obs
● 2016-07-06 22:40:06
○ 2017-03-14 03:24:12
○ 2026-04-26 05:51:14
●NSns1.websupport.cz2026-04-14 → 2026-04-26 · 3 obs
● 2026-04-14 06:15:48
● 2026-04-26 05:51:14
○NSns2.21mar.com2015-12-13 → 2016-07-06 · 4 obs
● 2016-07-06 22:40:06
○ 2017-03-14 03:24:12
○ 2026-04-26 05:51:14
●NSns2.websupport.cz2026-04-14 → 2026-04-26 · 3 obs
● 2026-04-14 06:15:48
● 2026-04-26 05:51:14
●NSns3.websupport.eu2026-04-14 → 2026-04-26 · 3 obs
● 2026-04-14 06:15:48
● 2026-04-26 05:51:14
○MX21mar.com2015-12-13 → 2017-03-14 · 4 obs
● 2017-03-14 03:24:12
○ 2026-04-14 06:15:48
○ 2026-04-26 05:51:14
○A173.199.167.1802015-12-13 → 2016-07-06 · 4 obs
● 2016-07-06 22:40:06
○ 2017-03-14 03:24:12
○ 2026-04-26 05:51:14
○A212.18.235.692017-03-14 → 2017-03-14 · 4 obs
● 2017-03-14 03:24:12
○ 2026-04-14 06:15:48
○ 2026-04-26 05:51:14
●A37.9.175.2112026-04-14 → 2026-04-26 · 3 obs
● 2026-04-14 06:15:48
● 2026-04-26 05:51:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net... | - |
| 21mar.com | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.13
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21mar.com (unsigned zone)
⏱️ Timing
Total: 1138ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.9.175.211 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
IP Addresses
21mar.com resolves to a single IP address: 37.9.175.211.
Other host names including ligsuniversity.sk, 21-stoleti.cz, smartinvestsolution.com, people4it.cz and www.tomtom.sk share IP numbers with 21mar.com.
Name Servers
21mar.com is delegated to three name servers: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
21mar.com at least partially shares name servers with other domains, including cssi-cr.cz, krmivahulin.cz, ciphercad.com, vyrabime-programy.cz and npmk.cz.
these name servers are commonly used together with ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
Host names with two IP numbers:
ns1.websupport.cz points to: 2a10:bbc0::11 and 45.10.97.11
ns2.websupport.cz points to: 2a02:250:3::12 and 185.71.159.12
ns3.websupport.eu points to: 2a10:bbc0::13 and 45.10.97.13