3c.dk DNS records

🖥️ Nameservers5 records 62ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	—	—	—
ns2.gigahost.dk	—	—	—
ns3.gigahost.dk	—	—	—
ns4.gigahost.dk	—	—	—
ns5.gigahost.dk	—	—	—

🌍 A Records1 records 60ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	—	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records10 records 64ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	ASPMX.L.GOOGLE.COM	64.233.164.27	lf-in-f27.1e100.net	AS15169 Google LLC
10	—	mx1.gigahost.dk	46.183.139.11	mx1.gigahost.dk	AS47292 Sentia Denmark A/S
10	—	mx2.gigahost.dk	46.183.139.12	mx2.gigahost.dk	AS47292 Sentia Denmark A/S
10	—	mx3.gigahost.dk	46.183.139.13	mx3.gigahost.dk	AS47292 Sentia Denmark A/S
20	—	ALT1.ASPMX.L.GOOGLE.COM	172.253.158.26	so-in-f26.1e100.net	AS15169 Google LLC
20	—	ALT2.ASPMX.L.GOOGLE.COM	172.253.158.27	so-in-f27.1e100.net	AS15169 Google LLC
30	—	ASPMX2.GOOGLEMAIL.COM	192.178.211.26	lcbomp-in-f26.1e100.net	AS15169 Google LLC
30	—	ASPMX3.GOOGLEMAIL.COM	142.250.147.26	rd-in-f26.1e100.net	AS15169 Google LLC
30	—	ASPMX4.GOOGLEMAIL.COM	172.253.152.26	yulpptr-in-f26.1e100.net	AS15169 Google LLC
30	—	ASPMX5.GOOGLEMAIL.COM	192.178.211.26	lcbomp-in-f26.1e100.net	AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 229ms

TXT Record
spf2.0/pra
v=spf1 include:aspmx.googlemail.com ~all
v=spf1 mx include:spf.gigahost.dk -all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (3c.dk)
~all (soft fail)	v=spf1 include:aspmx.googlemail.com ~all
-all (hard fail)	v=spf1 mx include:spf.gigahost.dk -all

📨 DMARC

Policy	Record (_dmarc.3c.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

🔗 TLSA / DANE

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

🔐 DNSSEC200ms

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

🏷️ SOA65ms

Field	Value
Serial	2026061203
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@3c.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

62ms

A

60ms

MX

64ms

AAAA

64ms

TXT

229ms

CAA

86ms

HTTPS

62ms

TLSA

67ms

SOA

65ms

MTA-STS

96ms

DNSSEC

200ms

SRV

0ms

Total

987ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 14:51:16	909ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-08-26 14:24:42	3027ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-08-25 16:07:08	9288ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-08-21 00:16:06	3116ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-08-13 15:44:58	7466ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-08-07 11:14:53	1872ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-07-31 11:26:48	2240ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-07-23 13:47:27	17864ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-07-17 09:29:46	3623ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-07-09 03:18:43	2488ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-07-03 14:53:08	1297ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-06-26 14:35:52	1451ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-06-24 15:05:43	876ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-06-21 06:36:06	1055ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-06-21 03:19:09	820ms	5 NS 1 A 10 MX	🔓 Insecure	View
2026-06-16 12:39:06	987ms	5 NS 1 A 10 MX	🔓 Insecure	View