20b.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 1 September 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.116 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by 20b-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 93.191.156.116 | 3600s | linux235.unoeuro.com | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| MS=ms91903698 |
| v=spf1 include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.eu.signature365.net -all |
| vpe=609440c9 |
| Policy | Record (20b.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.eu.signature365.net -all |
| Policy | Record (_dmarc.20b.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 93.191.156.116 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-20b-dk._domainkey.taekker.d-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-20b-dk._domainkey.taekker.d-v1.dkim.mail.microsoft | RSA · ~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: 3/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2025-09-01 |
| Expires | 2027-08-31 (317d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 10:43:06 shown | 1421ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 09:58:50 | 1237ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 23:00:07 | 9341ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 22:35:33 | 6190ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 17:02:48 | 4768ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-30 09:01:03 | 1080ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 23:16:48 | 1302ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 00:07:47 | 691ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 04:34:55 | 694ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 21:41:12 | 697ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 00:46:45 | 1190ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 12:54:12 | 1439ms | 3 NS 1 A 1 MX | 🔒 Secure |