obsurv.dk is a .dk domain served by 3 nameservers (nsa.byte.nl, nsb.byte.nl, nsc.byte.nl). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by smtp1.byte.nl, smtp2.byte.nl. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| nsa.byte.nl | 46.21.228.110 | nsa.byte.nl | AS34762 Combell NV |
| nsb.byte.nl | 46.21.225.222 | nsb.byte.nl | AS34762 Combell NV |
| nsc.byte.nl | 87.238.161.15 | nsc.byte.nl | AS34762 Combell NV |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 195.81.168.116 |
| 🔶 Autoconfig | 195.81.168.116 |
| TXT Record |
|---|
| v=spf1 include:spf.byte.nl ?all |
| Policy | Record (obsurv.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:spf.byte.nl ?all |
| www | 195.81.168.116 (AS3257) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 4/10 · policy: ?all
| 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 | 2003030410 |
| Primary NS (MNAME) | nsa.byte.nl |
| Responsible (RNAME) | hostmaster@byte.nl |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 21:47:43 shown | 1323ms | 3 NS 0 A 2 MX | 🔓 Insecure |
| 2026-09-03 21:21:19 | 1443ms | 3 NS 0 A 2 MX | 🔓 Insecure |
| 2026-08-28 09:58:02 | 3782ms | 3 NS 0 A 2 MX | 🔓 Insecure |
| 2026-08-26 18:21:05 | 1162ms | 3 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-20 10:18:29 | 884ms | 3 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-18 04:28:07 | 910ms | 3 NS 0 A 2 MX | 🔓 Insecure |