wittrup.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 9 January 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.239.32.21 is hosted by Google LLC (AS15169) in United States. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 216.239.32.21 | 43200s | any-in-2015.1e100.net | AS15169 | Google LLC | 216.239.32.0/20 | 🇺🇸 United States | — |
| 216.239.34.21 | 43200s | any-in-2215.1e100.net | AS15169 | Google LLC | 216.239.32.0/20 | 🇺🇸 United States | — |
| 216.239.36.21 | 43200s | any-in-2415.1e100.net | AS15169 | Google LLC | 216.239.32.0/20 | 🇺🇸 United States | — |
| 216.239.38.21 | 43200s | any-in-2615.1e100.net | AS15169 | Google LLC | 216.239.32.0/20 | 🇺🇸 United States | — |
| 87.116.7.118 | 600s | mail.itgv.dk | AS31027 | GlobalConnect A/S | 87.116.0.0/18 | 🇩🇰 Denmark | Frederiksberg |
| TXT Record |
|---|
| protonmail-verification=f86e6acdcf24613a5ec3daabcc032d46e0b81f54 |
| v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCdkT0a9ODd7LtNuE6AZmhxax/PolBOBsb+xZie3iIMRxR0rd3R5wiUdoGKVlkBnQKPgvf+KgfOtgBrTsqC16D70fc9igwnYU1GGs3vdX9dAxXCp54Yy1Auxh0DSPvC2pxT1HR9vBkrKSIollOODIKY7mwv8kmvTqrUY19Q1/y/VQIDAQAB |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (wittrup.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.wittrup.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 87.116.7.118 (AS31027) (address records, no CNAME) |
| www vs bare domain | Same network wittrup.dk: 216.239.32.21 216.239.34.21 216.239.36.21 216.239.38.21 (AS15169 AS31027) www.wittrup.dk: 87.116.7.118 (AS31027) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026091501 |
| 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 | ONE.COM A/S |
| Registered | 1998-01-09 |
| Expires | 2027-03-31 (164d) |
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 |
|---|---|---|---|
| 2026-09-29 21:38:43 shown | 699ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-09-27 23:11:45 | 916ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-09-18 12:04:23 | 1927ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-09-03 21:55:59 | 743ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-08-25 18:05:34 | 902ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-08-18 18:20:42 | 1259ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-08-12 03:16:29 | 2939ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-07-21 11:59:40 | 17269ms | 2 NS 5 A 2 MX | 🔒 Secure |
| 2026-06-18 00:29:44 | 837ms | 2 NS 5 A 2 MX | 🔒 Secure |