mdteacher.dk

📜 Historical scan 2026-06-17 23:09:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 104ms

Nameserver	IP addresses	PTR	ASN / ISP
elmo.ns.cloudflare.com	108.162.193.163 172.64.33.163 173.245.59.163 2606:4700:58::adf5:3ba3 2803:f800:50::6ca2:c1a3 2a06:98c1:50::ac40:21a3	elmo.ns.cloudflare.com elmo.ns.cloudflare.com elmo.ns.cloudflare.com elmo.ns.cloudflare.com elmo.ns.cloudflare.com elmo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
zara.ns.cloudflare.com	108.162.192.148 172.64.32.148 173.245.58.148 2606:4700:50::adf5:3a94 2803:f800:50::6ca2:c094 2a06:98c1:50::ac40:2094	zara.ns.cloudflare.com zara.ns.cloudflare.com zara.ns.cloudflare.com zara.ns.cloudflare.com zara.ns.cloudflare.com zara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 164ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.50.195	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.210.8	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 155ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	—	aspmx.l.google.com	142.251.127.26 2a00:1450:4001:c21::1a	lcfrai-in-f26.1e100.net lcfrai-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	—	alt1.aspmx.l.google.com	172.253.152.27 2a00:1450:4010:c22::1a	yulpptr-in-f27.1e100.net yulpptr-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	—	alt2.aspmx.l.google.com	192.178.158.26 2404:6800:4003:c26::1a	lcdels-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	91.221.196.226
🔶 Autoconfig	91.221.196.226

🔷 AAAA Records (IPv6)#

2 records 155ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:d208	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:32c3	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 338ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.50.195,172.67.210.8 ech=AEX+DQBBnAAgACBeRsiogButg1cXG+B47GvAtSqi3Ug1C0cFugeMjxDaMwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:d208,2606:4700:3036::6815:32c3

📝 TXT Records#

4 records 1617ms

TXT Record
ca3-5625a7c10a224b81806c634f1eeb5b40
google-site-verification=DJQoO1gRmvq_nJBq8zarbArAx4pnYEPISTNqVtZi9nY
google-site-verification=tyGoc9qpv1uebvYCVKH98CxnbtJpyPTDrpjF3yIUhJ4
klaviyo-site-verification=XFMw8g

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.mdteacher.dk)
p=none (monitor only)	v=DMARC1; p=none; fo=1; rua=mailto:info@mdteacher.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-22 19:30:29

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

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

761ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

129ms

Field	Value
Serial	2403563007
Primary NS (MNAME)	elmo.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-20 11:12:27

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-04-10
Expires	2035-04-30 (3111d)

📋 WHOIS#

⏱️ Lookup Timing#

104ms

164ms

155ms

AAAA

155ms

TXT

1617ms

CAA

258ms

HTTPS

338ms

TLSA

1761ms

SOA

129ms

MTA-STS

323ms

DNSSEC

761ms

SRV

313ms

Total

16414ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
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 shown	16414ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-17 23:02:00	20159ms	2 NS 2 A 5 MX	🔓 Insecure