3ff.dk is a .dk domain served by 2 nameservers (jay.ns.cloudflare.com, uma.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.9.190 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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.9.190 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.189.133 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:9be | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:bd85 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.9.190,172.67.189.133 ech=AEX+DQBBhwAgACDYKYgJHc0wlNsTqOvfbb09938nrswzyTv1eSNrq/wofgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:9be,2606:4700:3036::ac43:bd85 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (3ff.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.3ff.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; |
| www | 104.21.9.190 172.67.189.133 2606:4700:3030::6815:9be 2606:4700:3036::ac43:bd85 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.3ff.dk | W-qmMjUs8MKIabSmZUetFRLt5aRqWBw-fnFmV45jwXg |
| TXT | _acme-challenge.3ff.dk | yc-FP_0DBcrrTXUap7fZjwnGLmgLR-gYoxX_JQAUT90 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417616286 |
| Primary NS (MNAME) | jay.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 19:42:13 shown | 2358ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-15 18:02:49 | 388ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 14:37:03 | 452ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-27 14:38:34 | 591ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-02 16:30:19 | 579ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 21:05:48 | 686ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 20:02:53 | 662ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-16 18:41:06 | 2878ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-29 17:02:02 | 3601ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-25 15:06:51 | 1856ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 12:48:18 | 567ms | 2 NS 2 A 0 MX | 🔓 Insecure |