jesperbierbaum.dk DNS records

🖥️ Nameservers2 records 217ms

Nameserver	IP addresses	PTR	ASN / ISP
cory.ns.cloudflare.com	108.162.193.93 172.64.33.93 173.245.59.93 2606:4700:58::adf5:3b5d 2803:f800:50::6ca2:c15d 2a06:98c1:50::ac40:215d	cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com cory.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
melinda.ns.cloudflare.com	108.162.192.198 172.64.32.198 173.245.58.198 2606:4700:50::adf5:3ac6 2803:f800:50::6ca2:c0c6 2a06:98c1:50::ac40:20c6	melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 135ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.79.217	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.171.141	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 217ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔶 Autoconfig	104.21.79.217

🔷 AAAA Records (IPv6)2 records 137ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:ab8d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4fd9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 133ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.79.217,172.67.171.141 ech=AEX+DQBB0wAgACBvcdMNkiAKssD1MMlAjwQ9suAXxEyj8jm+B6MzOy6bHAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:ab8d,2606:4700:3035::6815:4fd9

📝 TXT Records1 records 457ms

TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (jesperbierbaum.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.jesperbierbaum.dk	abddNFucArQcmAzRy20ZwS0woYOgX1kCijdJBqYk9oA
TXT	_acme-challenge.jesperbierbaum.dk	gP7YQe-U8udxAjBB5Zv7sbaZ0vxHS_ROrw2lSbJzY4Y

🔗 TLSA / DANE2 records 292ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC366ms

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	2413054993
Primary NS (MNAME)	cory.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

217ms

A

135ms

MX

217ms

AAAA

137ms

TXT

457ms

CAA

110ms

HTTPS

133ms

TLSA

292ms

SOA

0ms

MTA-STS

235ms

DNSSEC

366ms

SRV

224ms

Total

2446ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-24 14:23:45	2446ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-22 07:47:03	1442ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-14 01:15:34	989ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-27 17:14:59	1158ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-23 23:49:00	995ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-23 00:12:16	1173ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 10:05:24	960ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-20 21:42:03	2082ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-20 06:26:38	2535ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-17 11:55:28	876ms	2 NS 2 A 1 MX	🔓 Insecure	View