seldenmast.dk is a .dk domain served by 4 nameservers (ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 213.136.57.250 is hosted by Bahnhof AB (AS8473) in Sweden. Mail is handled by seldenmast-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 213.136.57.250 | 14400s | 250.248-28.136.213.in-addr.arpa | AS8473 | Bahnhof AB | 213.136.32.0/19 | 🇸🇪 Sweden | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.178.232 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| hWeNqxxR2SST2rl/2BY6Wsj7jh4q+mU2XtwZvOStMQE3B3Qn6pBgDCkpjXQx3MyYNl6KPJmo71wR4bYs8oZ1OA== |
| MS=ms47288124 |
| v=spf1 include:spf.protection.outlook.com ip4:213.136.57.250 -all |
| Policy | Record (seldenmast.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com ip4:213.136.57.250 -all |
| Policy | Record (_dmarc.seldenmast.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc-reports@Selden.onmicrosoft.com |
| www | 213.136.57.250 (AS8473) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-seldenmast-dk._domainkey.selden.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
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 | 2026042201 |
| Primary NS (MNAME) | ns1-08.azure-dns.com |
| Responsible (RNAME) | systeminfo@helpdesk.webland.se |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-06-22 11:42:49 shown | 984ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 17:20:44 | 1063ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 00:09:52 | 1096ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-19 13:29:47 | 1129ms | 4 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-17 13:51:02 | 3263ms | 4 NS 1 A 1 MX | 🔓 Insecure |