sfblab.dk is a .dk domain served by 4 nameservers (ns1-36.azure-dns.com, ns2-36.azure-dns.net, ns3-36.azure-dns.org and 1 more). It was registered on 23 October 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.sfblab.dk. The zone is not DNSSEC-signed, publishes a 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | mail.sfblab.dk | 20.106.77.102 | — | AS8075 Microsoft Corporation |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.sfblab.dk → 20.106.77.102 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 0 | 10 | mail.sfblab.dk |
| _sipfederationtls._tcp | 1 | 0 | 5061 | sip.sfblab.dk |
| TXT Record |
|---|
| fNLcmD95t2iTLH+oa4qfguiNKDCw5SSJgMEMKIAYnhE782oSY14KwGhURQafidK9FHeLlDXObX4Rsq/zgm10hw== |
| MS=ms90093042 |
| sln0cw3q38wv7fqtvwm93gvljf4z4pt9 |
| v=spf1 mx ip4:20.106.96.125 ip4:20.106.77.102 include:spf.protection.outlook.com -all |
| Policy | Record (sfblab.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx ip4:20.106.96.125 ip4:20.106.77.102 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.sfblab.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:rua@dmarc.microsoft; ruf=mailto:ruf@dmarc.microsoft; fo=1 |
| Flags | Tag | Value |
|---|---|---|
| 0 | contactemail | caarecordaware@microsoft.com |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves sfblab.dk: no address www.sfblab.dk: no address |
| Wildcard | No |
DNS lookups: 2/10 · 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 1 |
| Primary NS (MNAME) | ns1-36.azure-dns.com |
| Responsible (RNAME) | azuredns-hostmaster@microsoft.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | MarkMonitor Inc. |
| Registered | 2015-10-23 |
| Expires | 2026-10-31 (8d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 10:24:26 | 589ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-27 17:15:41 shown | 595ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-27 20:25:34 | 586ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-24 00:40:50 | 733ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 03:57:11 | 1085ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 03:54:36 | 3690ms | 4 NS 0 A 1 MX | 🔓 Insecure |