copenhagenoptimization.dk is a .dk domain served by 2 nameservers (aisha.ns.cloudflare.com, beau.ns.cloudflare.com). It was registered on 24 October 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 34.53.130.199 is hosted by Google LLC (AS396982) in Belgium. Mail is handled by copenhagenoptimization-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 |
|---|---|---|---|---|---|---|---|
| 34.53.130.199 | 300s | 199.130.53.34.bc.googleusercontent.com | AS396982 | Google LLC | 34.32.0.0/11 | 🇧🇪 Belgium | Brussels |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| 🔶 Autoconfig | 34.53.130.199 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms69224025 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (copenhagenoptimization.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.copenhagenoptimization.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@copopt.com |
| www | 34.53.130.199 (AS396982) (address records, no CNAME) |
| www vs bare domain | Same network copenhagenoptimization.dk: 34.53.130.199 (AS396982) www.copenhagenoptimization.dk: 34.53.130.199 (AS396982) |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-copenhagenoptimization-dk._domainkey.copenhagenoptimization.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-copenhagenoptimization-dk._domainkey.copenhagenoptimization.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| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.copenhagenoptimization.dk | HOZ_y1XfGyRIRGBc-vyf1kTQiDHVekvxzG6VqkZNaI4 |
| TXT | _acme-challenge.copenhagenoptimization.dk | PYeyWwkme6bNWQxqOyeAqU8A9plGYKuwBlIm4OA5GtY |
| 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 | 2416777182 |
| Primary NS (MNAME) | aisha.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2014-10-24 |
| Expires | 2026-10-31 (10d) |
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 |
|---|---|
| betterhospital.dk | Simply.com A/S |
| copopt.dk | Name SRS AB |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 04:35:40 shown | 3265ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-10 10:40:08 | 1517ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-08 04:00:07 | 2687ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-25 21:39:50 | 1796ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 16:09:20 | 1656ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-10 17:05:44 | 3784ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-27 06:28:29 | 1596ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 22:23:36 | 657ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 22:20:54 | 684ms | 2 NS 1 A 1 MX | 🔓 Insecure |