ctolstrup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 April 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.210.102.230 is hosted by LiquidNet US LLC (AS14555) in United States. Mail is handled by mx.zoho.com, mx2.zoho.com and 1 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 162.210.102.230 | 33261s | — | AS14555 | LiquidNet US LLC | 162.210.96.0/21 | 🇺🇸 United States | — |
| TXT Record |
|---|
| v=spf1 include:zoho.com ~all |
| zoho-verification=zb74656079.zmverify.zoho.com |
| Policy | Record (ctolstrup.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:zoho.com ~all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 5/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061301 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2011-04-01 |
| Expires | 2027-04-30 (195d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 10:45:53 | 2076ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-17 11:30:41 | 1746ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-17 06:16:11 | 1216ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-19 23:42:31 | 5474ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-14 17:58:21 | 2744ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-17 15:31:47 | 17108ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-14 12:09:33 | 16868ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-26 18:40:37 | 839ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-19 15:40:42 shown | 2979ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-19 12:55:01 | 1131ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-16 23:10:50 | 2873ms | 2 NS 1 A 3 MX | 🔒 Secure |