j80.dk is a .dk domain served by 2 nameservers (arturo.ns.cloudflare.com, mona.ns.cloudflare.com). It was registered on 20 November 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.58.161 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.58.161 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.205.104 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | 300s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| 🔶 Autoconfig | autoconfig-mf.onlinemail.io → 185.21.40.62 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:cd68 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:3aa1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.58.161,172.67.205.104 ech=AEX+DQBB/wAgACAj8q7MWDQP7Ivd04Bdiof5uGPJmpXhw51KpzejfcSnVgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cd68,2606:4700:3037::6815:3aa1 |
| TXT Record |
|---|
| v=spf1 include:spf.onlinemail.io ?all |
| Policy | Record (j80.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:spf.onlinemail.io ?all |
| Policy | Record (_dmarc.j80.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; aspf=r; fo=1 |
| www | 104.21.58.161 172.67.205.104 2606:4700:3030::ac43:cd68 2606:4700:3037::6815:3aa1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 3/10 · policy: ?all
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.j80.dk | NhnP8GDFUkz-jJ406GuzXSjr62H82BRnnQTZFClU6uk |
| TXT | _acme-challenge.j80.dk | XtsB1w4IIWUSyg8tfzpRvzCr4R12lMXiZUt1Y8TVaCQ |
| 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 | 2416178302 |
| Primary NS (MNAME) | arturo.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2008-11-20 |
| Expires | 2026-11-30 (35d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:13:30 | 783ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-02 09:30:29 | 432ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-01 05:24:16 | 2077ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-30 05:17:14 shown | 1037ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-26 04:27:09 | 484ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-17 01:47:44 | 491ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-08 13:23:28 | 523ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-02 15:58:42 | 499ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-05 01:28:52 | 439ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-22 03:49:53 | 450ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-17 12:08:09 | 1028ms | 2 NS 1 A 2 MX | 🔒 Secure |