add-on.dk is a .dk domain served by 2 nameservers (asa.ns.cloudflare.com, dilbert.ns.cloudflare.com). It was registered on 25 November 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.45.184 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by addon-dk0i.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.45.184 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.218.30 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:2db8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::ac43:da1e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.45.184,172.67.218.30 ech=AEX+DQBBHQAgACCVKH0tapWKW1aDmmItLE41khRkYqidlTUBnmJguY6hAgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:2db8,2606:4700:3032::ac43:da1e |
| TXT Record |
|---|
| MS=ms73929261 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (add-on.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.add-on.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:rs@add-on.com |
| www | 104.21.45.184 172.67.218.30 2606:4700:3032::6815:2db8 2606:4700:3032::ac43:da1e (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
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 | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2412891741 |
| Primary NS (MNAME) | asa.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 | 2015-11-25 |
| Expires | 2026-11-30 (44d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-11 16:08:09 | 4309ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-08 05:37:40 | 1041ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 22:19:52 | 1234ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-05 19:27:37 | 10377ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 23:25:14 shown | 1335ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-23 06:19:18 | 11333ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-13 06:35:41 | 6066ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-30 02:20:26 | 1727ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-27 00:48:19 | 2750ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 12:55:56 | 1172ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 12:41:56 | 735ms | 2 NS 2 A 1 MX | 🔓 Insecure |