coursebuild.dk

📜 Historical scan 2026-08-23 18:46:54 · ← Latest scan

⏸ Reserved, not yet active ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

coursebuild.dk is a .dk domain that is reserved at the registry but not yet active: until it is activated it is delegated to the registry's placeholder nameserver (nonexistent.punktum.dk), so it does not resolve. It was registered on 19 July 2026 (WHOIS) and first appeared in the .dk zone on 20 July 2026. 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#

1 records 67ms

Nameserver	IP addresses	PTR	ASN / ISP
nonexistent.punktum.dk	—	—	—

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

202ms

Check	Result
Validation Status	❓ Unknown (the delegated nameservers don't answer)
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-08 14:35:05

Field	Value
Registrar	1API GmbH
Registered	2026-07-19
Expires	2027-07-18 (266d)

📋 WHOIS#

⏱️ Lookup Timing#

67ms

66ms

70ms

AAAA

72ms

TXT

194ms

CAA

63ms

HTTPS

84ms

TLSA

32ms

SOA

55ms

MTA-STS

117ms

DNSSEC

202ms

SRV

98ms

Total

1677ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 01:50:23	113ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-21 06:30:51	322ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-20 04:56:50	320ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-19 04:12:33	228ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-18 03:04:40	342ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-17 02:19:33	221ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-16 01:36:10	254ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-14 23:38:37	98ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-13 22:47:31	303ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-12 19:55:06	85ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-11 19:48:01	356ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-10 18:44:42	208ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-09 16:09:32	112ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-08 13:32:46	581ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-07 13:26:33	335ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-06 13:04:40	531ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-05 12:37:56	222ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-04 12:28:46	211ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-03 12:25:45	294ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-02 12:23:45	272ms	1 NS 0 A 0 MX	❓ Unknown
2026-10-01 12:20:43	411ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-30 12:18:57	240ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-29 12:14:16	198ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-28 12:08:08	222ms	1 NS 0 A 0 MX	❓ Unknown
2026-09-27 11:56:17	209ms	1 NS 0 A 0 MX	❓ Unknown