seistrup.dk DNS records

🖥️ Nameservers7 records 261ms

Nameserver	IP addresses	PTR	ASN / ISP
ns21.cloudns.net	109.201.133.61 2a00:1768:1001:9::21	ns21.cloudns.net ns21.cloudns.net	AS43350 NForce Entertainment B.V. AS43350 NForce Entertainment B.V.
ns23.cloudns.net	185.10.19.116 2a07:8dc0:1b:0:72:4eff:febc:d52d	ns23.cloudns.net ns23.cloudns.net	AS35661 Virtua Systems SAS AS35661 Virtua Systems SAS
ns24.cloudns.net	185.206.180.71 2a0b:1640:1:1:1:1:213:845c	ns24.cloudns.net ns24.cloudns.net	AS205787 Public Cloud Ltd. AS205787 Public Cloud Ltd.
pns21.cloudns.net	185.136.96.96 2a06:fb00:1::1:96	pns21.cloudns.net pns21.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns22.cloudns.net	185.136.97.96 2a06:fb00:1::2:96	pns22.cloudns.net pns22.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns23.cloudns.net	185.136.98.96 2a06:fb00:1::3:96	pns23.cloudns.net pns23.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
pns24.cloudns.net	185.136.99.96 2a06:fb00:1::4:96	pns24.cloudns.net pns24.cloudns.net	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd

🌍 A Records1 records 289ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.107.169.23	3600s	bornmesh.dk	AS24800	BornFiber Service Provider ApS	185.107.168.0/22	🇩🇰 Denmark	Rønne

📧 MX Records1 records 254ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	900s	smtp.google.com	142.251.127.26 142.251.127.27 2a00:1450:4001:c21::1a 2a00:1450:4001:c21::1b	lcfrai-in-f26.1e100.net lcfrai-in-f27.1e100.net lcfrai-in-f26.1e100.net lcfrai-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔶 Autoconfig	www.seistrup.dk → 185.107.169.23

🔷 AAAA Records (IPv6)1 records 261ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a00:4820:3f60:f00:dacb:8aff:feba:55d7	3600s	bornmesh.dk	AS24800	BornFiber Service Provider ApS	2a00:4820:0:0:0:0:0:0/32	🇩🇰 Denmark	Rønne

🔐 HTTPS Records1 records 252ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2"

🔌 SRV Records1 records 341ms

Service	Priority	Weight	Port	Target
_imaps._tcp	10	10	993	imap.gmail.com

📝 TXT Records2 records 661ms

TXT Record
google-site-verification=qCujEKz8HoDdSXKZjhcmh6bOJ6yAr6SnfyaogMiYBa8
v=spf1 include:universalspf.org -include:x.universalspf.org a include:_spf.szn.dk include:_spf.google.com -all

✉️ SPF

Policy	Record (seistrup.dk)
-all (hard fail)	v=spf1 include:universalspf.org -include:x.universalspf.org a include:_spf.szn.dk include:_spf.google.com -all

📨 DMARC

Policy	Record (_dmarc.seistrup.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@seistrup.dk; ruf=mailto:dmarc@seistrup.dk; fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=86400

📬 MTA-STS591ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	20260118123456
max_age	2629744s
Policy MX	smtp.google.com

📈 TLSRPT

Status	Report address (rua)
✓ Enabled	mailto:mta-sts@seistrup.dk

📜 CAA Records3 records 232ms

Flags	Tag	Value
0	iodef	mailto:klaus@seistrup.dk
0	issue	letsencrypt.org
0	issue	zerossl.com

🔗 TLSA / DANE1 records 1188ms

Service / Owner	Type	Cert association
HTTPS _443._tcp.seistrup.dk	DANE-EE · SPKI · SHA-256	2F9A1C46C8F3FE67BEE5AE4C69C2272C…

🔐 DNSSEC441ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081601
Primary NS (MNAME)	ns21.cloudns.net
Responsible (RNAME)	kas@port53.dk
Refresh	7200s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

261ms

A

289ms

MX

254ms

AAAA

261ms

TXT

661ms

CAA

232ms

HTTPS

252ms

TLSA

1188ms

SOA

0ms

MTA-STS

591ms

DNSSEC

441ms

SRV

341ms

Total

11769ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-17 07:04:51	11769ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 23:42:51	12694ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-08-01 02:37:31	8492ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 17:37:10	10483ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 17:06:44	11852ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 17:58:58	10874ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 09:31:30	1158ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-24 03:51:48	6105ms	7 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 05:22:46	8447ms	7 NS 1 A 1 MX	🔒 Secure	View