knuth.dk DNS records

🖥️ Nameservers5 records 54ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	46.183.139.31	ns1.gigahost.dk	AS47292 Sentia Denmark A/S
ns2.gigahost.dk	46.183.139.222	web22.gigahost.dk	AS47292 Sentia Denmark A/S
ns3.gigahost.dk	71.19.249.71	ns3.gigahost.dk	AS11831 eSecureData
ns4.gigahost.dk	51.79.215.130	ns4.gigahost.dk	AS16276 OVH SAS
ns5.gigahost.dk	77.74.192.83	ns5.gigahost.dk	AS42831 UK Dedicated Servers Limited

🌍 A Records1 records 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	3600s	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records3 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.gigahost.dk	46.183.139.11	mx1.gigahost.dk	AS47292 Sentia Denmark A/S
10	3600s	mx2.gigahost.dk	46.183.139.12	mx2.gigahost.dk	AS47292 Sentia Denmark A/S
10	3600s	mx3.gigahost.dk	46.183.139.13	mx3.gigahost.dk	AS47292 Sentia Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	knuth.dk → 46.183.138.100
🔶 Autoconfig	knuth.dk → 46.183.138.100

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 241ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	autodiscover.gigahost.dk

📝 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.knuth.dk	knuth.dk

🔗 TLSA / DANE

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

🔐 DNSSEC128ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090301
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@knuth.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

54ms

A

53ms

MX

54ms

AAAA

217ms

TXT

438ms

CAA

201ms

HTTPS

201ms

TLSA

69ms

SOA

0ms

MTA-STS

88ms

DNSSEC

128ms

SRV

241ms

Total

1007ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-05 02:59:24	1007ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-28 02:01:37	871ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-20 09:01:17	3275ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-13 22:42:35	9258ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-08 08:55:08	1127ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-02 05:36:31	981ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-23 03:02:01	1310ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-17 15:41:33	8754ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-09 03:55:46	1302ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-03 19:21:21	1174ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-26 07:59:05	740ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-18 08:04:00	1336ms	5 NS 1 A 3 MX	🔓 Insecure	View