seistrup.dk DNS records

🖥️ Nameservers7 records 47ms

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 42ms

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 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	900s	smtp.google.com	142.251.1.27 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1b 2a00:1450:4010:c01::1b 2a00:1450:4010:c05::1a 2a00:1450:4010:c05::1a 2a00:1450:4010:c05::1b 2a00:1450:4010:c05::1b 64.233.161.26 64.233.161.27 64.233.162.26 64.233.162.27	lb-in-f27.1e100.net lh-in-f26.1e100.net lh-in-x1a.1e100.net lh-in-f27.1e100.net lh-in-x1b.1e100.net li-in-f26.1e100.net li-in-x1a.1e100.net li-in-x1b.1e100.net li-in-f27.1e100.net lh-in-f26.1e100.net lh-in-f27.1e100.net li-in-f26.1e100.net li-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC 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 42ms

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 61ms

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

🔌 SRV Records1 records 102ms

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

📝 TXT Records2 records 324ms

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-STS203ms

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 51ms

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

🔗 TLSA / DANE1 records 1504ms

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

🔐 DNSSEC127ms

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

🏷️ SOA40ms

Field	Value
Serial	2026062106
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

47ms

A

42ms

MX

38ms

AAAA

42ms

TXT

324ms

CAA

51ms

HTTPS

61ms

TLSA

1504ms

SOA

40ms

MTA-STS

203ms

DNSSEC

127ms

SRV

102ms

Total

10874ms

🕐 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