laererstuderende.dk

📜 Historical scan 2026-10-01 03:47:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

laererstuderende.dk is a .dk domain served by 2 nameservers (ivan.ns.cloudflare.com, janet.ns.cloudflare.com). It was registered on 17 February 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.12.23 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 40ms

Nameserver	IP addresses	PTR	ASN / ISP
ivan.ns.cloudflare.com	108.162.193.120 172.64.33.120 173.245.59.120 2606:4700:58::adf5:3b78 2803:f800:50::6ca2:c178 2a06:98c1:50::ac40:2178	ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
janet.ns.cloudflare.com	108.162.192.169 172.64.32.169 173.245.58.169 2606:4700:50::adf5:3aa9 2803:f800:50::6ca2:c0a9 2a06:98c1:50::ac40:20a9	janet.ns.cloudflare.com janet.ns.cloudflare.com janet.ns.cloudflare.com janet.ns.cloudflare.com janet.ns.cloudflare.com janet.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

3 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.12.23	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.13.23	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.69.129	300s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records#

5 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	aspmx.l.google.com	2a00:1450:4010:c07::1a 2a00:1450:4010:c07::1a 74.125.131.27	lf-in-f26.1e100.net lf-in-x1a.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx3.googlemail.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

3 records 30ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:c17	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:d17	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:4581	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.26.12.23,104.26.13.23,172.67.69.129 ipv6hint=2606:4700:20::681a:c17,2606:4700:20::681a:d17,2606:4700:20::ac43:4581

📝 TXT Records#

2 records 175ms

TXT Record
google-site-verification=rjSOdloEV8wgHrQchThHPGfNYlwVF0fxCX-rX1GEcGA
v=spf1 mx ip4:185.223.26.234 include:sendgrid.net include:_spf.google.com ~all

✉️ SPF#

Policy	Record (laererstuderende.dk)
~all (soft fail)	v=spf1 mx ip4:185.223.26.234 include:sendgrid.net include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.laererstuderende.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:1e910fc61df143c0b09b1dca36c5f4ec@dmarc-reports.cloudflare.net

📬 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 2026-10-15 02:23:43

www	104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 2606:4700:20::681a:d17 2606:4700:20::ac43:4581 (AS13335) (address records, no CNAME)
www vs bare domain	Same network laererstuderende.dk: 104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 (AS13335) www.laererstuderende.dk: 104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 (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

✍️ DKIM keys#

3 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit
s1	s1.domainkey.u906417.wl168.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u906417.wl168.sendgrid.net	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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

110ms

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

🏷️ SOA#

32ms

Field	Value
Serial	2416251540
Primary NS (MNAME)	ivan.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 12:12:48

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-02-17
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

34ms

44ms

AAAA

30ms

TXT

175ms

CAA

32ms

HTTPS

34ms

TLSA

137ms

SOA

32ms

MTA-STS

57ms

DNSSEC

110ms

SRV

70ms

Total

983ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 02:23:43	899ms	2 NS 3 A 5 MX	🔓 Insecure
2026-10-01 03:47:00 shown	983ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-30 03:40:18	1288ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-20 18:51:02	1429ms	2 NS 3 A 5 MX	🔓 Insecure
2026-09-05 13:42:44	2024ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-27 23:04:08	1161ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-27 20:16:57	781ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-15 10:03:23	1752ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-08 16:13:36	1680ms	2 NS 3 A 5 MX	🔓 Insecure
2026-08-01 16:26:09	3513ms	2 NS 3 A 5 MX	🔓 Insecure
2026-07-28 22:35:20	2063ms	2 NS 3 A 5 MX	🔓 Insecure
2026-07-25 16:24:29	17557ms	2 NS 3 A 5 MX	🔓 Insecure
2026-07-11 09:59:09	3371ms	2 NS 3 A 5 MX	🔓 Insecure
2026-07-03 18:14:44	3239ms	2 NS 3 A 5 MX	🔓 Insecure
2026-07-02 17:33:11	5965ms	2 NS 3 A 5 MX	🔓 Insecure
2026-06-24 03:20:42	2376ms	2 NS 3 A 5 MX	🔓 Insecure
2026-06-23 12:19:26	902ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-23 06:04:15	1660ms	2 NS 3 A 5 MX	🔓 Insecure
2026-06-23 01:41:12	1166ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 01:04:08	2034ms	2 NS 3 A 5 MX	🔓 Insecure