4sr.com - dns.ninja
4sr.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=1785963254 | ||||||
Subdomains
mail.4sr.com |
Same first word
4sr.de |
4sr.us |
4sr.pl |
4sr.ru |
4sr.cc |
4sr.nl |
4sr.com.br |
4sr.co.uk |
4sr.eu |
4sr.org |
4sr.at |
4sr.cz |
4sr.com |
4sr.es |
4sr.cn |
4sr.it |
4sr.com.au |
4sr.sk |
4sr.inf.br |
4sr.uk |
Similar names
DNS History
9 records (6 active, 3 former)
●NSns1.websupport.cz2026-02-25 → 2026-08-05 · 3 obs
● 2026-02-25 21:41:32
● 2026-08-05 21:21:12
●NSns2.websupport.cz2026-02-25 → 2026-08-05 · 3 obs
● 2026-02-25 21:41:32
● 2026-08-05 21:21:12
○NSns25.domaincontrol.com2015-08-04 → 2016-04-09 · 4 obs
● 2016-04-09 08:39:54
○ 2026-02-25 21:41:32
○ 2026-08-05 21:21:12
○NSns26.domaincontrol.com2015-08-04 → 2016-04-09 · 4 obs
● 2016-04-09 08:39:54
○ 2026-02-25 21:41:32
○ 2026-08-05 21:21:12
●NSns3.websupport.eu2026-02-25 → 2026-08-05 · 3 obs
● 2026-02-25 21:41:32
● 2026-08-05 21:21:12
●MXdae35c73338296cc.mx1.emailprofi.seznam.cz2026-02-25 → 2026-08-05 · 3 obs
● 2026-02-25 21:41:32
● 2026-08-05 21:21:12
●MXdae35c73338296cc.mx2.emailprofi.seznam.cz2026-02-25 → 2026-08-05 · 3 obs
● 2026-02-25 21:41:32
● 2026-08-05 21:21:12
○MXmail.4sr.com2015-08-04 → 2016-04-09 · 4 obs
● 2016-04-09 08:39:54
○ 2026-02-25 21:41:32
○ 2026-08-05 21:21:12
●A93.185.102.802015-08-04 → 2026-08-05 · 2 obs
● 2026-08-05 21:21:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 4sr.com | ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu | - |
✅ Authoritative Response
Server:45.10.97.11
NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 441ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 93.185.102.80 |
| NS | 3 | ns1.websupport.cz, ns2.websupport.cz... |
| MX | 2 | dae35c73338296cc.mx2.emailprofi.seznam.c, dae35c73338296cc.mx1.emailprofi.seznam.c |
| TXT | 3 | facebook-domain-verification=4j7dp1fotwb, google-site-verification=caSweCEKhMQbNiV... |
| SOA | 1 | ns1.websupport.cz admin.websupport.cz |
Analysis
Hierarchy
The domain mail.4sr.com falls under the parent 4sr.com.
IP Addresses
4sr.com points to a single IP number: 93.185.102.80.
Additional host names — risjk.cz, ledax.cz, aime.sk and two others — share IP numbers with 4sr.com.
Name Servers
Three name servers are authoritative for 4sr.com: ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.
At least some of 4sr.com's name servers are shared with other domains, for example artplace.cz, etron.cz, jankupka.com and two more.
It is common for these name servers to be used in conjunction with the name servers ns1.websupport.sk, ns2.websupport.sk and ns3.websupport.sk.
ns1.websupport.cz resolves to 45.10.97.11 and 2a10:bbc0::11. ns2.websupport.cz resolves to 185.71.159.12 and 2a02:250:3::12. ns3.websupport.eu resolves to 45.10.97.13 and 2a10:bbc0::13. All three hostnames point to two IP numbers each.
Mail Servers
4sr.com has two mail servers: dae35c73338296cc.mx1.emailprofi.seznam.cz and dae35c73338296cc.mx2.emailprofi.seznam.cz.
Each of the two host names carries two IP addresses: dae35c73338296cc.mx1.emailprofi.seznam.cz points to 77.75.77.56 and 2a02:598:2::1056, and dae35c73338296cc.mx2.emailprofi.seznam.cz points to 77.75.77.146 and 2a02:598:2::1146.