rdg.dk is a .dk domain served by 2 nameservers (dell.ns.cloudflare.com, keaton.ns.cloudflare.com). It was registered on 15 October 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.62.201 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by rdg-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.62.201 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.138.197 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:3ec9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:8ac5 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.62.201,172.67.138.197 ech=AEX+DQBB8gAgACCIZ8uQXidaAaC48rHXa9UK3cXHkpyHTn9GHoptCod4GAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:3ec9,2606:4700:3035::ac43:8ac5 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=I8qXlOAY_YIZO6VwrbIhstSHWDW-cWy0QphctjydfW |
| anthropic-domain-verification-5b4ev8=SWXST7ReUo1eQKl6wtPskIJ8y |
| apple-domain-verification=F1wptAY3AzwgmCox |
| autodesk-domain-verification=QlGjmyLcgslFqfIda-gT |
| dropbox-domain-verification=m2tdeqw6wan8 |
| google-site-verification=dxCGmHIRvzkH-8SsZNKpLls7BEoADjEXqxH930EsEBI |
| google-site-verification=EW-Vdx6sbu6UGr2q3lk9wskh3oSAkPL8551VF87ritA |
| hibp-verify=dweb_igw6nl8gcatyvvw3n3cjwpsu |
| MS=ms81720613 |
| openai-domain-verification=dv-sHXLDeMHssOzJIqjZ7oAxurU |
| s5+bCLFLF8mJJTJOtVKUsGppBFcIGFqcOSodGpyer8WSer/CcgqStXWAVo2err/xJzrGVFKWIs9RssdKTPJqUA== |
| v=spf1 include:spf.protection.outlook.com include:_spf.anpdm.com include:mail.zendesk.com include:konformit.com include:spf.mailanyone.net include:_spf.presscloud.com include:_spf.easycruit.com a:mail.edisoft.no ip4:212.130.93.25 ip4:212.130.93.16 ip4:91.201.169.184 -all |
| Policy | Record (rdg.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:_spf.anpdm.com include:mail.zendesk.com include:konformit.com include:spf.mailanyone.net include:_spf.presscloud.com include:_spf.easycruit.com a:mail.edisoft.no ip4:212.130.93.25 ip4:212.130.93.16 ip4:91.201.169.184 -all |
| Policy | Record (_dmarc.rdg.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:it-admin@rdg.dk; ruf=mailto:it-admin@rdg.dk; sp=reject; |
| www | 104.21.62.201 172.67.138.197 2606:4700:3032::6815:3ec9 2606:4700:3035::ac43:8ac5 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector2 | selector2-rdg-dk._domainkey.rosendahldesigngroup.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: 8/10 · policy: -all
| 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 | 2417018282 |
| Primary NS (MNAME) | dell.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 1997-10-15 |
| Expires | 2028-12-31 (805d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 10:36:18 shown | 1243ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-08 01:56:43 | 1102ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 11:54:38 | 668ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 11:51:18 | 1054ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 11:13:21 | 1085ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 10:55:47 | 1843ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 10:43:20 | 970ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 22:40:53 | 885ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 10:56:50 | 774ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 03:51:44 | 692ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 21:26:18 | 1173ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 18:26:59 | 989ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 04:19:55 | 1257ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 00:16:52 | 971ms | 2 NS 1 A 1 MX | 🔒 Secure |