rlb.dk is a .dk domain served by 3 nameservers (blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org). It was registered on 15 December 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 141.101.90.96 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by rlb-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 141.101.90.96 | 300s | — | AS13335 | Cloudflare, Inc. | 141.101.90.0/24 | — | — |
| 141.101.90.97 | 300s | — | AS13335 | Cloudflare, Inc. | 141.101.90.0/24 | — | — |
| 141.101.90.98 | 300s | — | AS13335 | Cloudflare, Inc. | 141.101.90.0/24 | — | — |
| 141.101.90.99 | 300s | — | AS13335 | Cloudflare, Inc. | 141.101.90.0/24 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a06:98c1:3200::90:0 | 300s | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3200:0:0:0:0:0/48 | — | — |
| 2a06:98c1:3200::90:1 | 300s | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3200:0:0:0:0:0/48 | — | — |
| 2a06:98c1:3200::90:2 | 300s | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3200:0:0:0:0:0/48 | — | — |
| 2a06:98c1:3200::90:3 | 300s | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3200:0:0:0:0:0/48 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=141.101.90.96,141.101.90.97,141.101.90.98,141.101.90.99 ipv6hint=2a06:98c1:3200::90:0,2a06:98c1:3200::90:1,2a06:98c1:3200::90:2,2a06:98c1:3200::90:3 |
| TXT Record |
|---|
| MS=ms28865236 |
| v=spf1 a mx include:_spfsmtp.bankdata.dk ip4:193.162.109.0/24 ip4:52.178.110.48 include:spf.protection.outlook.com include:mailmailmail.net -all |
| Policy | Record (rlb.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:_spfsmtp.bankdata.dk ip4:193.162.109.0/24 ip4:52.178.110.48 include:spf.protection.outlook.com include:mailmailmail.net -all |
| Policy | Record (_dmarc.rlb.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:mailauth-reports@bankdata.dk,mailto:7oaxn8uv@ag.eu.dmarcadvisor.com; ruf=mailto:7oaxn8uv@fr.eu.dmarcadvisor.com; fo=1 |
| www | 141.101.90.96 141.101.90.97 141.101.90.98 141.101.90.99 2a06:98c1:3200::90:0 2a06:98c1:3200::90:1 2a06:98c1:3200::90:2 2a06:98c1:3200::90:3 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network rlb.dk: 141.101.90.96 141.101.90.97 141.101.90.98 141.101.90.99 (AS13335) www.rlb.dk: 141.101.90.96 141.101.90.97 141.101.90.98 141.101.90.99 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-rlb-dk._domainkey.b0024.onmicrosoft.com | 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: 5/10 · 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 | 2408941496 |
| Primary NS (MNAME) | blue.foundationdns.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | InterNetX GmbH |
| Registered | 2006-12-15 |
| Expires | 2026-12-31 (72d) |
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 |
|---|---|---|---|
| 2026-10-19 11:25:47 | 1609ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-15 09:02:41 | 1663ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-12 21:47:40 | 1408ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-11 18:56:30 | 777ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-08 16:08:36 | 1206ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-07 15:59:44 | 1232ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-10-02 04:16:08 | 815ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-30 04:00:47 | 1393ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-28 21:46:12 | 1121ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-24 20:35:28 | 1409ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-23 20:15:34 | 1754ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-19 16:20:29 | 1242ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-09-12 14:27:38 | 2025ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-24 22:59:56 | 1031ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-21 19:54:47 | 3545ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-13 17:08:18 | 2032ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-08-07 20:04:15 | 2780ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-08 19:55:03 shown | 3195ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-07-03 17:35:11 | 3303ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-06-25 12:57:00 | 2121ms | 3 NS 4 A 1 MX | 🔒 Secure |
| 2026-06-18 04:23:30 | 1306ms | 3 NS 4 A 1 MX | 🔒 Secure |