hefu.dk is a .dk domain served by 7 nameservers (ns1.first-ns.de, ns1.hefu.dk, ns2.hefu.dk and 4 more). It was registered on 19 February 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.251.205.35 is hosted by Hi3G Access AB (AS44034) in Denmark. Mail is handled by mail1.hefu.dk, mail2.hefu.dk and 2 more. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 80.251.205.35 | 3600s | 80.251.205.35.bredband.3.dk | AS44034 | Hi3G Access AB | 80.251.192.0/20 | 🇩🇰 Denmark | Odder |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail1.hefu.dk | 80.251.205.35 | 80.251.205.35.bredband.3.dk | AS44034 Hi3G Access AB |
| 20 | 43200s | mail2.hefu.dk | 80.209.68.68 | 80.209.68.68.static.fibianet.dk | AS44869 FIBIA P/S |
| 30 | 43200s | mail3.hefu.dk | 95.209.155.98 | 95.209.155.98.mobile.3.dk | AS44034 Hi3G Access AB |
| 40 | 43200s | odin.hefu.dk | 142.132.179.114 | odin.hefu.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 +mx +a +ip4:80.251.205.35 +a:80.251.205.35.bredband.3.dk +ip4:95.209.155.98 +a:95.209.155.98.mobile.3.dk +a:smtp.3.dk +a:smtp1.tre.se +ip4:80.209.68.68 +a:80.209.68.68.static.fibianet.dk -all |
| Policy | Record (hefu.dk) |
|---|---|
| -all (hard fail) | v=spf1 +mx +a +ip4:80.251.205.35 +a:80.251.205.35.bredband.3.dk +ip4:95.209.155.98 +a:95.209.155.98.mobile.3.dk +a:smtp.3.dk +a:smtp1.tre.se +ip4:80.209.68.68 +a:80.209.68.68.static.fibianet.dk -all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
DNS lookups: 7/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail1.hefu.dk | DANE-EE · Full cert · SHA-256 | 82DE9E8E4FFC0E0ACF4AF9C680011127… |
| SMTP _25._tcp.mail2.hefu.dk | DANE-EE · Full cert · SHA-256 | 82DE9E8E4FFC0E0ACF4AF9C680011127… |
| 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 | 2026072504 |
| Primary NS (MNAME) | ns1.hefu.dk |
| Responsible (RNAME) | hostmaster@hefu.dk |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2001-02-19 |
| Expires | 2027-03-31 (165d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 18:08:09 | 2833ms | 7 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-14 08:13:33 | 6883ms | 7 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-25 20:32:31 shown | 9887ms | 7 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-17 11:07:41 | 3464ms | 7 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-17 11:07:25 | 1495ms | 7 NS 1 A 4 MX | 🔓 Insecure |