mdteacher.dk is a .dk domain served by 2 nameservers (elmo.ns.cloudflare.com, zara.ns.cloudflare.com). It was registered on 10 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.50.195 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.50.195 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.210.8 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 91.221.196.226 |
| 🔶 Autoconfig | 91.221.196.226 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:d208 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:32c3 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.50.195,172.67.210.8 ech=AEX+DQBB+AAgACCXqy/0K1IWhcBtF0Op9PLaHF+/bPFKZfNl29cvd0shVgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:d208,2606:4700:3037::6815:32c3 |
| TXT Record |
|---|
| ca3-5625a7c10a224b81806c634f1eeb5b40 |
| google-site-verification=DJQoO1gRmvq_nJBq8zarbArAx4pnYEPISTNqVtZi9nY |
| google-site-verification=L5H5LQKithSajbD_ehkCUI_TTNy4bGpO0zy_vTHoeU4 |
| google-site-verification=tyGoc9qpv1uebvYCVKH98CxnbtJpyPTDrpjF3yIUhJ4 |
| klaviyo-site-verification=XFMw8g |
| v=spf1 include:_spf.google.com ~all |
| Policy | Record (mdteacher.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.google.com ~all |
| Policy | Record (_dmarc.mdteacher.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; fo=1; rua=mailto:info@mdteacher.dk |
| www | 104.21.50.195 172.67.210.8 2606:4700:3033::ac43:d208 2606:4700:3037::6815:32c3 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network mdteacher.dk: 104.21.50.195 172.67.210.8 2606:4700:3033::ac43:d208 2606:4700:3037::6815:32c3 (AS13335) www.mdteacher.dk: 104.21.50.195 172.67.210.8 2606:4700:3033::ac43:d208 2606:4700:3037::6815:32c3 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 1/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.mdteacher.dk | mdteacher.dk.kinstavalidation.app |
| 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 | 2418227565 |
| Primary NS (MNAME) | elmo.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-04-10 |
| Expires | 2035-04-30 (3109d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 20:41:09 shown | 2363ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-10-22 19:30:29 | 695ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-10-20 10:48:12 | 3438ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-30 11:11:49 | 896ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-06 23:05:12 | 954ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-27 02:25:20 | 984ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-22 11:53:16 | 9707ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-21 11:22:23 | 10425ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-07-04 22:34:32 | 2226ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-19 18:37:49 | 1048ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-17 23:09:46 | 16414ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-06-17 23:02:00 | 20159ms | 2 NS 2 A 5 MX | 🔓 Insecure |