tautologi.dk

📜 Historical scan 2026-08-11 13:07:01 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tautologi.dk is a .dk domain served by 2 nameservers (bjorn.ns.cloudflare.com, haley.ns.cloudflare.com). It was registered on 6 February 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.16.164 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route1.mx.cloudflare.net, route3.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed and validates, publishes a 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 197ms

Nameserver	IP addresses	PTR	ASN / ISP
bjorn.ns.cloudflare.com	108.162.195.98 162.159.44.98 172.64.35.98 2606:4700:58::a29f:2c62 2803:f800:50::6ca2:c362 2a06:98c1:50::ac40:2362	bjorn.ns.cloudflare.com bjorn.ns.cloudflare.com bjorn.ns.cloudflare.com bjorn.ns.cloudflare.com bjorn.ns.cloudflare.com bjorn.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
haley.ns.cloudflare.com	108.162.194.15 162.159.38.15 172.64.34.15 2606:4700:50::a29f:260f 2803:f800:50::6ca2:c20f 2a06:98c1:50::ac40:220f	haley.ns.cloudflare.com haley.ns.cloudflare.com haley.ns.cloudflare.com haley.ns.cloudflare.com haley.ns.cloudflare.com haley.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 239ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.16.164	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.214.218	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

3 records 260ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
17	300s	route1.mx.cloudflare.net	162.159.205.11 162.159.205.12 162.159.205.13 2606:4700:f5::b 2606:4700:f5::c 2606:4700:f5::d	route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
36	300s	route3.mx.cloudflare.net	162.159.205.23 162.159.205.24 162.159.205.25 2606:4700:f5::11 2606:4700:f5::12 2606:4700:f5::13	route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
72	300s	route2.mx.cloudflare.net	162.159.205.17 162.159.205.18 162.159.205.19 2606:4700:f5::10 2606:4700:f5::e 2606:4700:f5::f	route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.214.218
🔶 Autoconfig	172.67.214.218

🔷 AAAA Records (IPv6)#

2 records 248ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:10a4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d6da	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 220ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.16.164,172.67.214.218 ech=AEX+DQBBzAAgACCkkSSC2Dn8vGl9PC6cuE+G09TsGhDAji94khmKTw4oOwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:10a4,2606:4700:3035::ac43:d6da

📝 TXT Records#

2 records 665ms

TXT Record
tautologi.dk is tautologi.dk
v=spf1 include:_spf.mx.cloudflare.net ~all

✉️ SPF#

Policy	Record (tautologi.dk)
~all (soft fail)	v=spf1 include:_spf.mx.cloudflare.net ~all

📨 DMARC#

Policy	Record (_dmarc.tautologi.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:08b84ed52d114e86838b9f89a704ce61@dmarc-reports.cloudflare.net

📬 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 2026-10-11 07:36:31

www	104.21.16.164 172.67.214.218 2606:4700:3035::6815:10a4 2606:4700:3035::ac43:d6da (AS13335) (address records, no CNAME)
www vs bare domain	Same network tautologi.dk: 104.21.16.164 172.67.214.218 2606:4700:3035::6815:10a4 2606:4700:3035::ac43:d6da (AS13335) www.tautologi.dk: 104.21.16.164 172.67.214.218 2606:4700:3035::6815:10a4 2606:4700:3035::ac43:d6da (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

9 records 347ms

Service / Owner	Type	Cert association
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…

🔐 DNSSEC#

381ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2411849227
Primary NS (MNAME)	bjorn.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 07:26:42

Field	Value
Registrar	Simply.com A/S
Registered	2013-02-06
Expires	2027-07-31 (278d)

📋 WHOIS#

⏱️ Lookup Timing#

197ms

239ms

260ms

AAAA

248ms

TXT

665ms

CAA

257ms

HTTPS

220ms

TLSA

347ms

SOA

0ms

MTA-STS

304ms

DNSSEC

381ms

SRV

304ms

Total

6856ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 07:36:31	691ms	2 NS 2 A 3 MX	🔒 Secure
2026-10-09 07:20:11	5187ms	2 NS 2 A 3 MX	🔒 Secure
2026-10-01 02:52:34	969ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-16 21:11:16	10412ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-05 12:48:58	1060ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-24 15:06:40	1964ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-11 13:07:01 shown	6856ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-31 18:50:28	1934ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-06 19:04:30	15069ms	2 NS 2 A 3 MX	🔒 Secure
2026-06-23 17:02:05	3733ms	2 NS 2 A 3 MX	🔒 Secure
2026-06-23 12:24:40	1128ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 13:11:43	6371ms	2 NS 2 A 3 MX	🔒 Secure