syltfaerge.dk is a .dk domain served by 2 nameservers (clyde.ns.cloudflare.com, vera.ns.cloudflare.com). It was registered on 14 March 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.7.145 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx01.hornetsecurity.com, mx02.hornetsecurity.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 |
|---|---|---|---|---|---|---|---|
| 104.21.7.145 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.187.154 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx01.hornetsecurity.com | 94.100.132.8 | mx01.hornetsecurity.com | AS25394 MK Netzdienste GmbH & Co. KG |
| 20 | 300s | mx02.hornetsecurity.com | 94.100.136.8 | mx02.hornetsecurity.com | AS24679 kyberio GmbH |
| 30 | 300s | mx03.hornetsecurity.com | 94.100.134.8 | mx03.hornetsecurity.com | AS12676 HKN GmbH |
| 40 | 300s | mx04.hornetsecurity.com | 94.100.136.7 | mx04.hornetsecurity.com | AS24679 kyberio GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:791 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::ac43:bb9a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.7.145,172.67.187.154 ech=AEX+DQBB+QAgACC4DdYqHTdxernrdnIyRrzQN/vHbEVb/PZAkAmRWTwPKAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:791,2606:4700:3032::ac43:bb9a |
| TXT Record |
|---|
| MS=ms19214649 |
| v=spf1 a mx ip4:82.194.97.140 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all |
| Policy | Record (syltfaerge.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx ip4:82.194.97.140 include:spf.protection.outlook.com include:spf.hornetsecurity.com -all |
| Policy | Record (_dmarc.syltfaerge.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:451584ad37db4b57b3c3361e232ba7ca@dmarc-reports.cloudflare.net |
| Check | Result |
|---|---|
| Status | 🔒 Enforce |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | enforce |
| Policy ID | 20220413151900Z |
| max_age | 86400s |
| Policy MX | *.hornetsecurity.com, *.mail.protection.outlook.com |
| www | 104.21.7.145 172.67.187.154 2606:4700:3032::6815:791 2606:4700:3032::ac43:bb9a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network syltfaerge.dk: 104.21.7.145 172.67.187.154 2606:4700:3032::6815:791 2606:4700:3032::ac43:bb9a (AS13335) www.syltfaerge.dk: 104.21.7.145 172.67.187.154 2606:4700:3032::6815:791 2606:4700:3032::ac43:bb9a (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 4/10 · 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 | 2413766014 |
| Primary NS (MNAME) | clyde.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | InterNetX GmbH |
| Registered | 2011-03-14 |
| Expires | 2027-03-31 (158d) |
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).
| Domain | Registrar |
|---|---|
| frs-syltfaehre.dk | InterNetX GmbH |
| sylt-express.dk | InterNetX GmbH |
| sylt-faehre.dk | InterNetX GmbH |
| sylt-faerge.dk | InterNetX GmbH |
| syltfaehre.dk | InterNetX GmbH |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 07:28:49 | 2488ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-10-03 12:58:19 | 1586ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-26 00:32:34 | 1207ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-20 00:46:47 | 1450ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-06 13:50:04 | 1433ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-09-05 15:54:35 shown | 956ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-08-28 05:42:18 | 1330ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-08-26 15:15:48 | 1102ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-08-25 19:17:05 | 853ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-08-08 18:50:12 | 1867ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-07-18 04:29:23 | 17069ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-07-16 05:46:08 | 1929ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-07-05 10:32:34 | 9894ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-06-25 09:51:57 | 1094ms | 2 NS 2 A 4 MX | 🔒 Secure |
| 2026-06-23 04:59:30 | 913ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 03:10:13 | 1020ms | 2 NS 2 A 4 MX | 🔒 Secure |