atrs.dk is a .dk domain served by 2 nameservers (ivan.ns.cloudflare.com, ruth.ns.cloudflare.com). It was registered on 17 June 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.78.151 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by atrs-dk.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 |
|---|---|---|---|---|---|---|---|
| 104.21.78.151 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.223.83 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:4e97 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:df53 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.78.151,172.67.223.83 ech=AEX+DQBB2wAgACBXRtrDiXvxpxDsDe5MXkRwopS+5mpW5R0nK9U+MN4DcQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4e97,2606:4700:3035::ac43:df53 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms26465849 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (atrs.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.atrs.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; adkim=s; aspf=s; |
| www | 104.21.78.151 172.67.223.83 2606:4700:3031::6815:4e97 2606:4700:3035::ac43:df53 (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 | 2414756956 |
| Primary NS (MNAME) | ivan.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 | 2025-06-17 |
| Expires | 2027-06-16 (242d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 00:54:23 | 1107ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-04 02:54:32 | 1574ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 02:44:23 shown | 870ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 15:26:23 | 9683ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 03:36:26 | 935ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-07 07:31:27 | 2268ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 11:04:03 | 10759ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-06 14:00:18 | 1768ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-14 22:28:39 | 1690ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 11:49:05 | 6078ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 04:49:19 | 939ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 13:48:17 | 1248ms | 2 NS 2 A 1 MX | 🔓 Insecure |