sisyphus.dk is a .dk domain served by 3 nameservers (ns1.dns.services, ns2.dns.services, ns3.dns.services). It was registered on 30 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.186.216.134 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by mail.sisyphus.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 5.186.216.134 | — | 5.186.216.134.dhcp.fibianet.dk | AS44869 | FIBIA P/S | 5.186.0.0/16 | 🇩🇰 Denmark | Frederiksberg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail.sisyphus.dk | 5.186.216.134 | 5.186.216.134.dhcp.fibianet.dk | AS44869 FIBIA P/S |
| TXT Record |
|---|
| v=spf1 ip4:5.186.216.134 -all |
| Policy | Record (sisyphus.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:5.186.216.134 -all |
| Policy | Record (_dmarc.sisyphus.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:rua@trichloglyph.dk; |
| www CNAME | sisyphus.dk (all on sisyphus.dk) → 5.186.216.134 (AS44869) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · 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 | 2023063020 |
| Primary NS (MNAME) | ns1.dns.services |
| Responsible (RNAME) | post@dns.services |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 1814400s |
| Minimum (neg-cache TTL) | 7200s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2023-06-30 |
| Expires | 2027-06-29 (247d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 12:47:37 | 460ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 18:08:57 | 423ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 09:09:18 | 471ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 07:17:44 | 3247ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 04:35:39 | 1146ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 03:02:40 | 2106ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 13:41:09 | 1048ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 20:32:57 shown | 563ms | 3 NS 1 A 1 MX | 🔒 Secure |