sif-skydning.dk is a .dk domain served by 2 nameservers (eoin.ns.cloudflare.com, lorna.ns.cloudflare.com). It was registered on 15 August 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.5.20 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by sifskydning-dk0i.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.5.20 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.132.192 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.39.72 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:514 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::ac43:84c0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.5.20,172.67.132.192 ech=AEX+DQBBKQAgACBOi0WemTsnhHj6Ex84wrPXMSw7l+G18dmvduVQvV0YAAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:514,2606:4700:3034::ac43:84c0 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms94491048 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (sif-skydning.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 104.21.5.20 172.67.132.192 2606:4700:3030::ac43:84c0 2606:4700:3034::6815:514 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network sif-skydning.dk: 104.21.5.20 172.67.132.192 2606:4700:3030::ac43:84c0 2606:4700:3034::6815:514 (AS13335) www.sif-skydning.dk: 104.21.5.20 172.67.132.192 2606:4700:3030::ac43:84c0 2606:4700:3034::6815:514 (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: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2407624110 |
| Primary NS (MNAME) | eoin.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2024-08-15 |
| Expires | 2027-08-14 (298d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 22:54:17 | 1155ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-28 03:46:56 | 862ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 03:31:42 | 994ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 03:20:24 | 984ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-25 03:09:00 | 1202ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 02:54:09 | 817ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-03 15:06:57 | 1157ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-11 11:25:12 | 3880ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-30 13:56:58 | 25307ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-27 23:03:37 | 10876ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-16 20:24:51 | 17872ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 18:03:15 shown | 2364ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-18 06:42:49 | 1552ms | 2 NS 2 A 1 MX | 🔓 Insecure |