uffe-petersen.dk is a .dk domain served by 2 nameservers (cecelia.ns.cloudflare.com, leif.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.26.142 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.26.142 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.136.127 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.26.142 |
| 🔶 Autoconfig | 172.67.136.127 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:1a8e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:887f | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.26.142,172.67.136.127 ech=AEX+DQBBOgAgACDJGTyzLJf+z+xwDBmUMZUuIy8dhc5udlD23Xi6L5AONAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1a8e,2606:4700:3035::ac43:887f |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (uffe-petersen.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.uffe-petersen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:uffe.petersen+cloudflare@proton.me |
| www | 104.21.26.142 172.67.136.127 2606:4700:3031::6815:1a8e 2606:4700:3035::ac43:887f (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network uffe-petersen.dk: 104.21.26.142 172.67.136.127 2606:4700:3031::6815:1a8e 2606:4700:3035::ac43:887f (AS13335) www.uffe-petersen.dk: 104.21.26.142 172.67.136.127 2606:4700:3031::6815:1a8e 2606:4700:3035::ac43:887f (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 0/10 · 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 | 2415745242 |
| Primary NS (MNAME) | cecelia.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 21:14:20 | 464ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 21:22:56 | 555ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-27 19:23:36 | 608ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-25 18:53:15 shown | 10069ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-24 20:01:09 | 740ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-23 19:31:14 | 675ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-07 12:23:13 | 2447ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-30 20:37:00 | 566ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-28 03:46:51 | 9610ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 12:30:18 | 9623ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-11 00:45:32 | 3172ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-27 02:02:07 | 9478ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-18 17:38:18 | 9261ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-03 15:52:47 | 2680ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-24 04:10:41 | 840ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-17 13:08:13 | 865ms | 2 NS 2 A 0 MX | 🔓 Insecure |