jacobsen-byg.dk DNS records

🖥️ Nameservers2 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
asa.ns.cloudflare.com	108.162.192.246 172.64.32.246 173.245.58.246 2606:4700:50::adf5:3af6 2803:f800:50::6ca2:c0f6 2a06:98c1:50::ac40:20f6	asa.ns.cloudflare.com asa.ns.cloudflare.com asa.ns.cloudflare.com asa.ns.cloudflare.com asa.ns.cloudflare.com asa.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
cleo.ns.cloudflare.com	108.162.193.89 172.64.33.89 173.245.59.89 2606:4700:58::adf5:3b59 2803:f800:50::6ca2:c159 2a06:98c1:50::ac40:2159	cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.74.102	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.157.48	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:4a66	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:9d30	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 69ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.74.102,172.67.157.48 ech=AEX+DQBBKgAgACAvQqH0GYmbu3KvoVqKt+Ei4tgB0R7OrKySEEIuEA2POgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:4a66,2606:4700:3037::ac43:9d30

📝 TXT Records2 records 191ms

TXT Record
google-site-verification=I1UXV7NGo-cGMOYEwDa9XCW1oWGKIAmNGhKSqOi7M-U
v=spf1 ip4:185.26.104.0/22 ~all

✉️ SPF

Policy	Record (jacobsen-byg.dk)
~all (soft fail)	v=spf1 ip4:185.26.104.0/22 ~all

📨 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

🔗 TLSA / DANE

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

🔐 DNSSEC77ms

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	2412068164
Primary NS (MNAME)	asa.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

42ms

A

57ms

MX

43ms

AAAA

45ms

TXT

191ms

CAA

79ms

HTTPS

69ms

TLSA

55ms

SOA

0ms

MTA-STS

83ms

DNSSEC

77ms

SRV

94ms

Total

585ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 19:04:49	585ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-13 10:03:25	8762ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-07 21:55:58	9726ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-22 05:02:20	564ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-18 02:18:30	1360ms	2 NS 2 A 0 MX	🔓 Insecure	View