birkeroed-kollegiet.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.52.104.208 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mx.zohomail.com, mx2.zohomail.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 87.52.104.208 | 600s | 0x573468d0.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | birkeroed-kollegiet.dk → 87.52.104.208 |
| 🔶 Autoconfig | birkeroed-kollegiet.dk → 87.52.104.208 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 2 | 5061 | federation.messenger.msn.com |
| TXT Record |
|---|
| v=spf1 include:hotmail.com ~all |
| zoho-verification=zmverify.zoho.com |
| Policy | Record (birkeroed-kollegiet.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:hotmail.com ~all |
| www | 87.52.104.208 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.birkeroed-kollegiet.dk | birkeroed-kollegiet.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026101301 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 13:45:48 shown | 2128ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-09 09:07:17 | 576ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-29 21:08:45 | 931ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-24 03:52:39 | 1020ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-02 00:20:49 | 1047ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-28 13:33:50 | 4161ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 19:34:46 | 6133ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-20 00:38:51 | 748ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 14:41:07 | 1072ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-16 14:40:11 | 767ms | 2 NS 1 A 2 MX | 🔒 Secure |