folf.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 15 August 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 136.243.50.15 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail01.instinct.dk. 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 |
|---|---|---|---|---|---|---|---|
| 136.243.50.15 | 600s | inf.instinct.dk | AS24940 | Hetzner Online GmbH | 136.243.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail01.instinct.dk | — | — | — |
| TXT Record |
|---|
| google-site-verification=na_4r0DKlGOZkf1_UdpiO-TeIASWsl2ukPaOFYTWV74 |
| www CNAME | folf.dk (all on folf.dk) → 136.243.50.15 (AS24940) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.folf.dk | 9jEGF2E5q8Lx08T0c-2u25GswRQpDXRmA-n9K6G_Z5U |
| TXT | _acme-challenge.folf.dk | cxSZ_pUyCUuHo0ZDtspPjlBU6nIEVty9k_pZHsdzQh4 |
| TXT | _acme-challenge.folf.dk | DN0CTQ69S0KDUwy8oyi6CtdUB0cYi2IPtlMKhzfHvw4 |
| TXT | _acme-challenge.folf.dk | dRP_QrrDuyhcCNYc5OIsKBvnOBbWUv_IOHcmh5SjorA |
| TXT | _acme-challenge.folf.dk | gSKjCZP9w5L_XskXwicePi2ypt9mGNQ7ZZzhLseH5Mo |
| TXT | _acme-challenge.folf.dk | N1xbeCoYUSO8Ys9BAAACo9jYRlpVb87JDYNMZV_3jNk |
| TXT | _acme-challenge.folf.dk | PAA9CiENyky9GH-mC0TpsBYq8tfGFLxYsjIXOkcfsPc |
| TXT | _acme-challenge.folf.dk | PCcTP_3F9a5yE-Ur4Gw9GrSsbeoVsH6D4ltvq9OnYnE |
| TXT | _acme-challenge.folf.dk | R3kWLJ70nOm_j3b_x41PkeLrHYK_rxvDfSVgidJcEPE |
| TXT | _acme-challenge.folf.dk | RE698LDGL6Kf3i2rWl4AHEFW6KBMVfu0lPpE1xmOMdA |
| TXT | _acme-challenge.folf.dk | sUkoiEWmMw6cEjubU2ISNtQfsBOqoqUElHkMfgs36Ms |
| TXT | _acme-challenge.folf.dk | UOiWuqQSTzBO2jYAtJ6HbYvancC7gHKtx7QB6TVKNlc |
| TXT | _acme-challenge.folf.dk | vt88UYcOilsBY44RIeOilW_TXabvT91Z0iT-PNHR1_I |
| TXT | _acme-challenge.folf.dk | YbkNNa__ntbTBc5dF4tJGaaEoj0vOOzn0Npcsmj5QSI |
| TXT | _acme-challenge.folf.dk | YPKNxVTuQfA63HSaT-WfB2ZNuoD2y0o4YxKa_hmy7O0 |
| TXT | _acme-challenge.folf.dk | ZsMeGZu2MUoukMP0PqD4Q3Q01E2B_HHGlkhLykQdiok |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061300 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2018-08-15 |
| Expires | 2027-08-31 (311d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 04:36:13 | 1033ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 18:48:21 | 588ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 17:46:26 | 926ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 05:15:12 | 871ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 03:32:46 shown | 3563ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 15:04:10 | 1107ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 10:32:33 | 1155ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 09:30:39 | 563ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 09:26:47 | 692ms | 4 NS 1 A 1 MX | 🔒 Secure |