calertho.com - robtex.com
calertho.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 145.131.40.137🇳🇱 CLDIN-NL145.131.32.0/20 | ||||||
| PTR | vorta.dijkstra.nl | ||||||
| NS | ocampa.dijkstra.nl ⭐ | ||||||
| A | 145.131.30.29🇳🇱 CLDIN-NL145.131.16.0/20 | ||||||
| PTR | ocampa.dijkstra.nl | ||||||
| NS | ns1.openprovider.nl | ||||||
| A | 2400:cb00:2049:1::a29f:1a0a🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.26.10Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | vorta.dijkstra.nl | ||||||
| A | 145.131.40.137🇳🇱 CLDIN-NL145.131.32.0/20 | ||||||
| PTR | vorta.dijkstra.nl | ||||||
| MX | calertho.com ⭐ | ||||||
| A | 145.131.40.137🇳🇱 CLDIN-NL145.131.32.0/20 | ||||||
| PTR | vorta.dijkstra.nl | ||||||
| SOA | ocampa.dijkstra.nlsupport@dijkstra.nl 2026-05-13 #11 | ||||||
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=1778697681 | ||||||
MX for
calertho.com |
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
○NSns1.dnsowl.com2018-06-21 → 2018-06-21 · 3 obs
○ 2026-03-26 19:08:24
○ 2026-05-13 19:02:50
●NSns1.openprovider.nl2026-03-26 → 2026-05-13 · 3 obs
● 2026-03-26 19:08:24
● 2026-05-13 19:02:50
○NSns2.dnsowl.com2018-06-21 → 2018-06-21 · 3 obs
○ 2026-03-26 19:08:24
○ 2026-05-13 19:02:50
○NSns3.dnsowl.com2018-06-21 → 2018-06-21 · 3 obs
○ 2026-03-26 19:08:24
○ 2026-05-13 19:02:50
●NSocampa.dijkstra.nl2026-03-26 → 2026-05-13 · 3 obs
● 2026-03-26 19:08:24
● 2026-05-13 19:02:50
●NSvorta.dijkstra.nl2026-03-26 → 2026-05-13 · 3 obs
● 2026-03-26 19:08:24
● 2026-05-13 19:02:50
●MXcalertho.com2026-03-26 → 2026-05-13 · 2 obs
● 2026-05-13 19:02:50
○A107.161.23.2042018-06-21 → 2018-06-21 · 3 obs
○ 2026-03-26 19:08:24
○ 2026-05-13 19:02:50
●A145.131.40.1372026-03-26 → 2026-05-13 · 3 obs
● 2026-03-26 19:08:24
● 2026-05-13 19:02:50
○A192.161.187.2002018-06-21 → 2018-06-21 · 3 obs
○ 2026-03-26 19:08:24
○ 2026-05-13 19:02:50
○A209.141.38.712018-06-21 → 2018-06-21 · 3 obs
○ 2026-03-26 19:08:24
○ 2026-05-13 19:02:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, e.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net... | - |
| calertho.com | ns1.openprovider.nl, ocampa.dijkstra.nl, vorta.dijkstra.nl | - |
✅ Authoritative Response
Server:162.159.26.10
NS records: ns1.openprovider.nl, ocampa.dijkstra.nl, vorta.dijkstra.nl
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
No DNSKEY for calertho.com
⏱️ Timing
Total: 923ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 145.131.40.137 |
| NS | 3 | ocampa.dijkstra.nl, vorta.dijkstra.nl... |
| MX | 1 | calertho.com (pri: 0) |
| SOA | 1 | ocampa.dijkstra.nl support.dijkstra.nl |
Analysis
Mail Server Role
For calertho.com, the mail server is calertho.com.
IP Addresses
calertho.com resolves to one IP number: 145.131.40.137.
other host names including vigorem.nl, milieugroepnederland.org, idprofs.com, velvet.nl and garageboxdenhaag.nl share IP numbers with calertho.com.
Name Servers
calertho.com is delegated to three name servers ocampa.dijkstra.nl, vorta.dijkstra.nl and ns1.openprovider.nl.
calertho.com at least partially shares name servers with other domains, for instance tapifloor.nl, wik-bovensmilde.nl, living.be, djentenerife.com and squashonline.nl.
These name servers are commonly used alongside ns2.openprovider.be and ns3.openprovider.eu.
Host names with two IPs:
ns1.openprovider.nl points to: 2400:cb00:2049:1::a29f:1a0a and 162.159.26.10.
Host names with one IP:
ocampa.dijkstra.nl points to: 145.131.30.29.
vorta.dijkstra.nl points to: 145.131.40.137.
Mail Servers
calertho.com is served by a single mail server, calertho.com.
calertho.com resolves to IP 145.131.40.137.