3f-københavn.dk DNS records

🖥️ Nameservers4 records 505ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 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)

🔐 DNSSEC507ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxdomain

🏷️ SOA

✗ No SOA record found

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

505ms

A

454ms

MX

403ms

AAAA

413ms

TXT

1902ms

CAA

466ms

HTTPS

418ms

TLSA

388ms

SOA

141ms

MTA-STS

486ms

DNSSEC

507ms

SRV

509ms

Total

4523ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-24 02:32:11	4523ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-22 23:48:33	2452ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-21 23:44:43	1869ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-20 23:21:28	10430ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-19 22:29:42	9768ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-18 21:41:43	2758ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-17 19:23:59	1755ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-16 17:09:44	8933ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-15 04:42:28	4900ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-13 22:46:59	16893ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-12 21:03:14	10302ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-11 13:58:23	5545ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-10 10:16:57	5026ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-08 06:46:58	2008ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-07 04:43:39	9427ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-08-06 00:58:06	1484ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-30 01:52:24	1600ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-27 21:03:46	1780ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-26 20:08:11	2215ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-25 19:52:38	2154ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-24 19:25:55	2061ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-23 17:30:24	9328ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-22 16:01:57	2103ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-21 07:37:16	10325ms	4 NS 0 A 0 MX	❓ Unknown	View
2026-07-20 05:04:42	9278ms	4 NS 0 A 0 MX	❓ Unknown	View