crayfish.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 27 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.58.19.51 is hosted by netcup GmbH (AS197540) in Austria. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 89.58.19.51 | 600s | v2202609409733511498.ultrasrv.de | AS197540 | netcup GmbH | 89.58.0.0/18 | 🇦🇹 Austria | Vienna |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a0a:4cc0:0:8a6:3829:90ff:fe18:3e7 | 600s | — | AS197540 | netcup GmbH | 2a0a:4cc0:0:0:0:0:0:0/43 | 🇦🇹 Austria | Vienna |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (crayfish.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.crayfish.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject |
| www | 89.58.19.51 2a0a:4cc0:0:8a6:3829:90ff:fe18:3e7 (AS47147 AS197540) (address records, no CNAME) |
| www vs bare domain | Same network crayfish.dk: 89.58.19.51 2a0a:4cc0:0:8a6:3829:90ff:fe18:3e7 (AS47147 AS197540) www.crayfish.dk: 89.58.19.51 2a0a:4cc0:0:8a6:3829:90ff:fe18:3e7 (AS47147 AS197540) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026091015 |
| 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 | 2023-06-27 |
| Expires | 2027-06-26 (247d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-06 09:54:02 | 842ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-20 17:22:23 shown | 3953ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-11 12:34:37 | 1443ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-07 13:40:09 | 577ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-01 09:27:06 | 739ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 20:30:35 | 657ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-22 09:03:04 | 3059ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-07 02:48:49 | 1042ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-04 22:25:46 | 5755ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-08 17:47:22 | 17028ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 00:23:15 | 914ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 22:50:34 | 2642ms | 2 NS 1 A 4 MX | 🔒 Secure |