251server.com - robtex.com
251server.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=1785569707 | ||||||
Same first word
251server.com |
Similar names
DNS History
7 records (7 active, 0 former)
●NSns1066.ui-dns.biz2019-03-20 → 2026-08-01 · 2 obs
● 2026-08-01 07:51:40
●NSns1087.ui-dns.org2019-03-20 → 2026-08-01 · 2 obs
● 2026-08-01 07:51:40
●NSns1092.ui-dns.com2019-03-20 → 2026-08-01 · 2 obs
● 2026-08-01 07:51:40
●A144.217.10.2382019-03-20 → 2026-08-01 · 2 obs
● 2026-08-01 07:51:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| 251server.com | ns1066.ui-dns.biz, ns1085.ui-dns.de, ns1087.ui-dns.org, ns1092.ui-dns.com | 2 records |
✅ Authoritative Response
Server:217.160.82.92
NS records: ns1066.ui-dns.biz, ns1085.ui-dns.de, ns1087.ui-dns.org, ns1092.ui-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 251server.com (unsigned zone)
⏱️ Timing
Total: 571ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 144.217.10.238 |
| NS | 4 | ns1087.ui-dns.org, ns1085.ui-dns.de... |
| MX | 2 | mx01.ionos.com (pri: 10), mx00.ionos.com (pri: 10) |
| TXT | 1 | v=spf1 include:_spf-us.ionos.com ~all |
| SOA | 1 | ns1087.ui-dns.org hostmaster.1und1.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1092.ui-dns.com, ns1092.ui-dns.com)
Analysis
IP Addresses
251server.com has exactly one IP address — 144.217.10.238.
Host names like ns540566.ip-144-217-10.net are further examples that share IP numbers with 251server.com.
Name Servers
Four name servers handle the delegation for 251server.com: ns1066.ui-dns.biz, ns1092.ui-dns.com, ns1085.ui-dns.de and ns1087.ui-dns.org.
The name servers of 251server.com overlap at least partially with those of other domains — among them accufrog.org, ask-web.de, pavus.de and two more.
These name servers commonly appear in delegations together with ns1066.ui-dns.com, ns1066.ui-dns.de, ns1066.ui-dns.org and 7 other.
Each of the four hosts ns1066.ui-dns.biz, ns1092.ui-dns.com, ns1085.ui-dns.de and ns1087.ui-dns.org has two IP addresses. ns1066.ui-dns.biz points to 185.132.33.66 and 2607:f1c0:fe:53:185:132:33:66. ns1092.ui-dns.com points to 185.132.34.92 and 2607:f1c0:fe:53:185:132:34:92. ns1085.ui-dns.de points to 185.132.32.85 and 2607:f1c0:fe:53:185:132:32:85. ns1087.ui-dns.org points to 185.132.35.87 and 2607:f1c0:fe:53:185:132:35:87.
Mail Servers
251server.com uses two mail servers, mx00.ionos.com and mx01.ionos.com.
The mail server setup of 251server.com matches that of other domains such as experimentaldance.com, homexchangeguru.com, eepopp.com and two others.
Both mx00.ionos.com and mx01.ionos.com have a single IP address each — mx00.ionos.com resolves to 74.208.114.65 while mx01.ionos.com resolves to 74.208.114.66.