line21.dk DNS records

🖥️ Nameservers2 records 44ms

Nameserver	IP addresses	PTR	ASN / ISP
james.ns.cloudflare.com	108.162.193.178 172.64.33.178 173.245.59.178 2606:4700:58::adf5:3bb2 2803:f800:50::6ca2:c1b2 2a06:98c1:50::ac40:21b2	james.ns.cloudflare.com james.ns.cloudflare.com james.ns.cloudflare.com james.ns.cloudflare.com james.ns.cloudflare.com james.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
magali.ns.cloudflare.com	108.162.194.29 162.159.38.29 172.64.34.29 2606:4700:50::a29f:261d 2803:f800:50::6ca2:c21d 2a06:98c1:50::ac40:221d	magali.ns.cloudflare.com magali.ns.cloudflare.com magali.ns.cloudflare.com magali.ns.cloudflare.com magali.ns.cloudflare.com magali.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.15.91	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.205.170	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔶 Autoconfig	104.21.15.91

🔷 AAAA Records (IPv6)2 records 37ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:cdaa	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:f5b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 43ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.15.91,172.67.205.170 ech=AEX+DQBBEwAgACAd88cRhO+vfm24mS8YHeP02W/k5zt2dBN766PlNestEwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cdaa,2606:4700:3036::6815:f5b

🔌 SRV Records1 records 71ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	0	443	maildiscover.simply.com

📝 TXT Records3 records 187ms

TXT Record
google-site-verification=Epe7FZkbYMCJpxq57K7EIDrzBjxDhYcDgpBHJOGYVsM
google-site-verification=vrtj_nZ8BkZu30qHbKyUx4uSTBrGVjvPvNXMpoc-2f8
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (line21.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

🔗 TLSA / DANE2 records 67ms

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…

🔐 DNSSEC9087ms

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	2412819842
Primary NS (MNAME)	james.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

44ms

A

42ms

MX

61ms

AAAA

37ms

TXT

187ms

CAA

44ms

HTTPS

43ms

TLSA

67ms

SOA

0ms

MTA-STS

74ms

DNSSEC

9087ms

SRV

71ms

Total

10237ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 15:08:00	10237ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-22 12:05:08	1893ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-19 07:15:41	1708ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-07 21:23:28	1082ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-09 06:06:26	2465ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-25 14:20:48	886ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 06:11:59	767ms	2 NS 2 A 1 MX	🔓 Insecure	View