cortzen-christensen.dk is a .dk domain served by 2 nameservers (carter.ns.cloudflare.com, nelci.ns.cloudflare.com). It was registered on 14 January 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.192 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by cortzenchristensen-dk01i.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| carter.ns.cloudflare.com | — | — | — |
| nelci.ns.cloudflare.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 93.191.156.192 | — | linux302.unoeuro.com | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| MS=ms62133497 |
| v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all |
| Policy | Record (cortzen-christensen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all |
| Policy | Record (_dmarc.cortzen-christensen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:fe9fe1a12f1744a2a3ab8f03131c4aac@dmarc-reports.cloudflare.net |
| www | 93.191.156.192 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network cortzen-christensen.dk: 93.191.156.192 (AS48854) www.cortzen-christensen.dk: 93.191.156.192 (AS48854) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u21894919.wl170.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u21894919.wl170.sendgrid.net | RSA · ~2048 bit |
| selector1 | selector1-cortzenchristensen-dk01i._domainkey.cortzenchristensen.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: 2/10 · 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 | 2406718320 |
| Primary NS (MNAME) | carter.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Namehost by CoMaSys ApS |
| Registered | 2020-01-14 |
| Expires | 2027-01-31 (97d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 01:28:59 | 1247ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 00:42:23 | 1504ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 00:22:50 | 2771ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 23:57:03 | 2183ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 11:37:14 | 4201ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 16:50:34 | 1296ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 15:48:51 | 1403ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-17 03:45:12 | 2494ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-02 17:01:16 | 9922ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-23 01:58:49 | 4411ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-29 06:09:26 | 981ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 22:49:35 | 2620ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 22:30:40 shown | 684ms | 2 NS 1 A 1 MX | 🔒 Secure |