gbl21.dk

Records from scan: 2026-10-08 01:11:28 · 486ms total · last checked 2026-10-15 20:11 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gbl21.dk is a .dk domain served by 2 nameservers (ns1.aau.dk, ns2.aau.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.225.57.55 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by .. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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.

🖥️ Nameservers#

2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.aau.dk	130.225.52.5 2001:878:300:1::5	ns1.aau.dk ns1.aau.dk	AS1835 FSKNET-DK Forskningsnettet - Danish network for Research and Education AS1835 FSKNET-DK Forskningsnettet - Danish network for Research and Education
ns2.aau.dk	130.225.54.5 2001:878:300:100::5	ns2.aau.dk ns2.aau.dk	AS1835 FSKNET-DK Forskningsnettet - Danish network for Research and Education AS1835 FSKNET-DK Forskningsnettet - Danish network for Research and Education

🌍 A Records#

1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
130.225.57.55	3600s	—	AS1835	IDDQD-AS	130.225.0.0/16	🇩🇰 Denmark	—

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 221ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (gbl21.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.gbl21.dk)
p=reject	v=DMARC1; p=reject;

📬 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#

checked 2026-10-08 01:11:28

www	130.225.57.55 (AS1835) (address records, no CNAME)
www vs bare domain	Same network gbl21.dk: 130.225.57.55 (AS1835) www.gbl21.dk: 130.225.57.55 (AS1835)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.gbl21.dk	410161f6-5038-4bcf-a6ce-4a4f19464b37.acme.aau.dk
TXT	410161f6-5038-4bcf-a6ce-4a4f19464b37.acme.aau.dk	UJBzo-5IDsfH_Ua-wLFM5b4tjn0niOp-w392BgAPRBU
TXT	410161f6-5038-4bcf-a6ce-4a4f19464b37.acme.aau.dk	iXGuQAFfeusV8mcw8u7a4b_d7T8bCUvpWZNASNTFKSQ

🔗 TLSA / DANE#

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

🔐 DNSSEC#

69ms

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

🏷️ SOA#

57ms

Field	Value
Serial	2023091901
Primary NS (MNAME)	ns1.aau.dk
Responsible (RNAME)	hostmaster@its.aau.dk
Refresh	3600s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

40ms

37ms

38ms

AAAA

37ms

TXT

221ms

CAA

43ms

HTTPS

38ms

TLSA

51ms

SOA

57ms

MTA-STS

67ms

DNSSEC

69ms

SRV

59ms

Total

486ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 01:11:28 shown	486ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-29 15:01:33	1523ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-25 15:21:01	2349ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-27 03:17:23	633ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-22 22:44:48	734ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 09:22:16	4225ms	2 NS 1 A 0 MX	🔓 Insecure