laererstuderende.dk

📜 Historical scan 2026-07-25 16:24:29  ·  ← 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   65ms
NameserverIP addressesPTRASN / 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   45ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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   45ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s aspmx.l.google.com 142.251.9.26
2a00:1450:4025:c03::1a		 rc-in-f26.1e100.net
rc-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
20 300s alt1.aspmx.l.google.com 192.178.211.26
2404:6800:4000:1025::1b		 lcbomp-in-f26.1e100.net
lcbomp-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
20 300s alt2.aspmx.l.google.com 172.253.158.26
2404:6800:4003:c26::1a		 so-in-f26.1e100.net
so-in-f26.1e100.net		 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 172.253.158.27
2404:6800:4003:c26::1b		 so-in-f27.1e100.net
so-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC

🔷 AAAA Records (IPv6)#

3 records   66ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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   51ms
PriorityTargetSvcParams
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   220ms
TXT Record
google-site-verification=rjSOdloEV8wgHrQchThHPGfNYlwVF0fxCX-rX1GEcGA
v=spf1 mx ip4:185.223.26.234 include:sendgrid.net include:_spf.google.com ~all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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
www104.26.12.23 104.26.13.23 172.67.69.129 2606:4700:20::681a:c17 2606:4700:20::681a:d17 2606:4700:20::ac43:4581 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

3 found
SelectorCNAMEKey
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#

159ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2410453714
Primary NS (MNAME)ivan.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-07 12:12:48
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2000-02-17
Expires2027-03-31 (163d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
65ms
A
45ms
MX
45ms
AAAA
66ms
TXT
220ms
CAA
73ms
HTTPS
51ms
TLSA
142ms
SOA
0ms
MTA-STS
87ms
DNSSEC
159ms
SRV
109ms
Total
17557ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-15 02:23:43 899ms 2 NS 3 A 5 MX 🔓 Insecure
2026-10-01 03:47:00 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 shown 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
dhd.dk [/] search Domains, Hosts & DNS — .dk zone