bykoustrup.dk DNS records

🖥️ Nameservers2 records 81ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
34.51.215.156	3600s	156.215.51.34.bc.googleusercontent.com	AS396982	Google LLC	34.32.0.0/11	🇸🇪 Sweden	Stockholm

📧 MX Records4 records 63ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.pub.mailpod13-cph3.one.com	185.10.9.42	mx1.pub.mailpod13-cph3.one.com	AS51468 One.com A/S
10	10800s	mx2.pub.mailpod13-cph3.one.com	185.10.9.43	mx2.pub.mailpod13-cph3.one.com	AS51468 One.com A/S
10	10800s	mx3.pub.mailpod13-cph3.one.com	185.10.9.44	mx3.pub.mailpod13-cph3.one.com	AS51468 One.com A/S
10	10800s	mx4.pub.mailpod13-cph3.one.com	185.10.9.45	mx4.pub.mailpod13-cph3.one.com	AS51468 One.com A/S

🔷 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

Policy	Record (_dmarc.bykoustrup.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 / DANE4 records 138ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod13-cph3.one.com	DANE-EE · SPKI · SHA-256	BE8C554E6A2A9BFE9F87080F0AE71BAD…
SMTP _25._tcp.mx2.pub.mailpod13-cph3.one.com	DANE-EE · SPKI · SHA-256	BE8C554E6A2A9BFE9F87080F0AE71BAD…
SMTP _25._tcp.mx3.pub.mailpod13-cph3.one.com	DANE-EE · SPKI · SHA-256	BE8C554E6A2A9BFE9F87080F0AE71BAD…
SMTP _25._tcp.mx4.pub.mailpod13-cph3.one.com	DANE-EE · SPKI · SHA-256	BE8C554E6A2A9BFE9F87080F0AE71BAD…

🔐 DNSSEC105ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082202
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

81ms

A

44ms

MX

63ms

AAAA

36ms

TXT

196ms

CAA

65ms

HTTPS

66ms

TLSA

138ms

SOA

0ms

MTA-STS

70ms

DNSSEC

105ms

SRV

76ms

Total

1154ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 08:04:58	1154ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-22 14:44:48	4178ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-13 02:20:11	1122ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-11 22:10:04	1291ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-10 13:18:55	4884ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-28 11:01:36	677ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-21 13:51:27	748ms	2 NS 1 A 4 MX	⚠️ Bogus	View
2026-06-16 18:22:58	644ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-16 18:20:43	942ms	2 NS 1 A 4 MX	🔒 Secure	View