ungdomsborgen.dk

📜 Historical scan 2026-10-01 08:57:10 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ungdomsborgen.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 27 February 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.231 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.231	3600s	linux30.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

2 records 55ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	3600s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfig	autoconfig-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 159ms

TXT Record
v=spf1 include:spf.onlinemail.io -all

✉️ SPF#

Policy	Record (ungdomsborgen.dk)
-all (hard fail)	v=spf1 include:spf.onlinemail.io -all

📨 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 11:08:10

www	185.21.41.231 (AS48854) (address records, no CNAME)
www vs bare domain	Same network ungdomsborgen.dk: 185.21.41.231 (AS48854) www.ungdomsborgen.dk: 185.21.41.231 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

85ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

22ms

Field	Value
Serial	2025112401
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-17 10:34:24

Field	Value
Registrar	CURANET A/S
Registered	2004-02-27
Expires	2030-02-28 (1229d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

36ms

55ms

AAAA

25ms

TXT

159ms

CAA

44ms

HTTPS

22ms

TLSA

49ms

SOA

22ms

MTA-STS

89ms

DNSSEC

85ms

SRV

64ms

Total

649ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 11:08:10	377ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-01 08:57:10 shown	649ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-19 17:40:16	568ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-28 06:10:23	492ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-25 16:01:28	635ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-04 23:09:13	939ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-24 08:18:44	653ms	2 NS 1 A 2 MX	⚠️ Bogus
2026-06-20 03:16:19	1496ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-19 12:27:00	586ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-18 01:19:23	753ms	2 NS 1 A 2 MX	🔒 Secure