stadsing.dk is a .dk domain served by 2 nameservers (cortney.ns.cloudflare.com, yichun.ns.cloudflare.com). It was registered on 5 August 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.3.212 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by stadsing-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 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 |
|---|---|---|---|---|---|---|---|
| 104.21.3.212 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.131.53 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:3d4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:8335 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h2" ipv4hint=104.21.3.212,172.67.131.53 ech=AEX+DQBBhQAgACDdEx0VMOnsKwGS66tswISx6j5kfkD2I0gWXS41j0idNQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3d4,2606:4700:3035::ac43:8335 |
| TXT Record |
|---|
| google-site-verification=lVZsS2YH2pRU0yCgjH3Ardh1omsV9sASZuKq9ksJ6Qo |
| IBecsDY8RUFeDg3y5lqESR/GUC9bYp4oKDe1Mhq4FlI= |
| include:_spf.consignor.com |
| MS=3D68BF884290256F7CE98A06E598E6173E877A74 |
| MS=ms46810827 |
| v=spf1 ip4:152.115.130.220 ip4:152.115.130.221 ip4:152.115.130.222 a:servers.mcsv.net include:sendgrid.net include:spf.truelink.dk include:spf.protection.outlook.com -all |
| Policy | Record (stadsing.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:152.115.130.220 ip4:152.115.130.221 ip4:152.115.130.222 a:servers.mcsv.net include:sendgrid.net include:spf.truelink.dk include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.stadsing.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email,mailto:it@stadsing.dk |
| www | 104.21.3.212 172.67.131.53 2606:4700:3031::6815:3d4 2606:4700:3035::ac43:8335 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network stadsing.dk: 104.21.3.212 172.67.131.53 2606:4700:3031::6815:3d4 2606:4700:3035::ac43:8335 (AS13335) www.stadsing.dk: 104.21.3.212 172.67.131.53 2606:4700:3031::6815:3d4 2606:4700:3035::ac43:8335 (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 |
|---|---|---|
| s1 | s1.domainkey.u19439022.wl023.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u19439022.wl023.sendgrid.net | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-stadsing-dk._domainkey.optigroup.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-stadsing-dk._domainkey.optigroup.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| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.stadsing.dk | XvDuMssFbKvquFKPiSUBsKU6DRz2owa5XtZtZ9ngJHc |
| TXT | _acme-challenge.stadsing.dk | g4xU3-_MlycP8MBQHda4ZhhplswngA9vvlbSvdtWp30 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416243105 |
| Primary NS (MNAME) | cortney.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 1997-08-05 |
| Expires | 2027-09-30 (343d) |
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).
| Domain | Registrar |
|---|---|
| optigroup.dk | CSC Digital Brand Service, Inc |
| procurator.dk | CSC Digital Brand Service, Inc |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 22:48:24 | 2606ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-03 21:11:15 | 1918ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 21:05:10 | 3024ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 20:40:06 shown | 1145ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 09:35:08 | 811ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 20:08:44 | 1119ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-25 19:43:50 | 1475ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 17:24:59 | 1423ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 12:18:37 | 1469ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-12 09:19:47 | 1521ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-06 14:58:15 | 1648ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 16:15:37 | 2351ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 02:50:29 | 743ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-16 16:44:00 | 1654ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-04 00:30:15 | 3263ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-24 01:00:00 | 1283ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-22 23:51:24 | 9538ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-30 15:24:20 | 1183ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 01:21:07 | 1673ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 23:43:45 | 1154ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 13:52:01 | 2825ms | 2 NS 2 A 1 MX | 🔓 Insecure |