lettre.dk

📜 Historical scan 2026-09-20 14:13:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

lettre.dk is a .dk domain served by 2 nameservers (anderson.ns.cloudflare.com, deb.ns.cloudflare.com). It was registered on 6 February 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.62.245 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 116ms

Nameserver	IP addresses	PTR	ASN / ISP
anderson.ns.cloudflare.com	108.162.195.177 162.159.44.177 172.64.35.177 2606:4700:58::a29f:2cb1 2803:f800:50::6ca2:c3b1 2a06:98c1:50::ac40:23b1	anderson.ns.cloudflare.com anderson.ns.cloudflare.com anderson.ns.cloudflare.com anderson.ns.cloudflare.com anderson.ns.cloudflare.com anderson.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
deb.ns.cloudflare.com	108.162.192.92 172.64.32.92 173.245.58.92 2606:4700:50::adf5:3a5c 2803:f800:50::6ca2:c05c 2a06:98c1:50::ac40:205c	deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com deb.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 109ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.62.245	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.141.54	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.141.54
🔶 Autoconfig	104.21.62.245

🔷 AAAA Records (IPv6)#

2 records 109ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:8d36	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:3ef5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 89ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.62.245,172.67.141.54 ech=AEX+DQBBoAAgACBT5CoIK6Re0l200UWvqxNl7sVAFtO4BfagHf471WILFAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:8d36,2606:4700:3037::6815:3ef5

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-22 09:44:57

www	104.21.62.245 172.67.141.54 2606:4700:3031::ac43:8d36 2606:4700:3037::6815:3ef5 (AS13335) (address records, no CNAME)
www vs bare domain	Same network lettre.dk: 104.21.62.245 172.67.141.54 2606:4700:3031::ac43:8d36 2606:4700:3037::6815:3ef5 (AS13335) www.lettre.dk: 104.21.62.245 172.67.141.54 2606:4700:3031::ac43:8d36 2606:4700:3037::6815:3ef5 (AS13335)
Wildcard	No

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.lettre.dk	WhDRCjAkh6SDSKJhFQZ5ynUyZkn_6Gh7j0iQTkRjzqU
TXT	_acme-challenge.lettre.dk	kdPijMupaXAXv3kMu6IFhRAbbwf7Q_5n5dEuPSv6InQ

🔗 TLSA / DANE#

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

🔐 DNSSEC#

163ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2415210667
Primary NS (MNAME)	anderson.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-01 03:26:33

Field	Value
Registrar	Ilkari Domains Limited
Registered	2021-02-06
Expires	2027-02-28 (126d)

📋 WHOIS#

⏱️ Lookup Timing#

116ms

109ms

130ms

AAAA

109ms

TXT

254ms

CAA

122ms

HTTPS

89ms

TLSA

488ms

SOA

0ms

MTA-STS

108ms

DNSSEC

163ms

SRV

143ms

Total

1467ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 09:44:57	800ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-09 10:27:09	809ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-01 02:58:43	2536ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-30 02:34:46	1111ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-29 02:26:29	2762ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-28 02:01:42	1164ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-27 01:53:23	652ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 01:08:36	546ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-20 14:13:50 shown	1467ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-13 12:50:26	1198ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-05 03:14:24	1289ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-02 02:17:58	442ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-23 14:23:43	3517ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-22 16:52:08	927ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 22:14:48	1676ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-21 14:16:23	1141ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 04:15:53	1190ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 17:46:49	559ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-18 14:34:49	621ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-17 22:05:43	532ms	4 NS 1 A 0 MX	🔒 Secure