bookatrainer.dk

📜 Historical scan 2026-08-07 11:30:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bookatrainer.dk is a .dk domain served by 2 nameservers (isabel.ns.cloudflare.com, jacob.ns.cloudflare.com). It was registered on 3 September 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.75.200 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.dandomain.dk, mx2.dandomain.dk. The zone is of unknown DNSSEC status, 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 29ms

Nameserver	IP addresses	PTR	ASN / ISP
isabel.ns.cloudflare.com	108.162.194.104 162.159.38.104 172.64.34.104 2606:4700:50::a29f:2668 2803:f800:50::6ca2:c268 2a06:98c1:50::ac40:2268	isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com isabel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jacob.ns.cloudflare.com	108.162.195.162 162.159.44.162 172.64.35.162 2606:4700:58::a29f:2ca2 2803:f800:50::6ca2:c3a2 2a06:98c1:50::ac40:23a2	jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.ns.cloudflare.com jacob.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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.75.200	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.181.83	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.dandomain.dk	212.237.249.50	mx1.dandomain.dk	AS48854 team.blue Denmark A/S
20	300s	mx2.dandomain.dk	46.36.209.11	mx2.dandomain.dk	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.dandomain.dk → 212.237.249.98
🔶 Autoconfig	autoconfig-mf.dandomain.dk → 212.237.249.54

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:b553	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:4bc8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.75.200,172.67.181.83 ech=AEX+DQBBlgAgACBOVa41xu6bcV+LlvC50h2hZ68KJTI7OuQfWbRlzdxGSQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b553,2606:4700:3035::6815:4bc8

📝 TXT Records#

1 records 148ms

TXT Record
v=spf1 include:spf.dandomain.dk -all

✉️ SPF#

Policy	Record (bookatrainer.dk)
-all (hard fail)	v=spf1 include:spf.dandomain.dk -all

📨 DMARC#

Policy	Record (_dmarc.bookatrainer.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-09 14:15:12

www	104.21.75.200 172.67.181.83 2606:4700:3031::ac43:b553 2606:4700:3035::6815:4bc8 (AS13335) (address records, no CNAME)
www vs bare domain	Same network bookatrainer.dk: 104.21.75.200 172.67.181.83 2606:4700:3031::ac43:b553 2606:4700:3035::6815:4bc8 (AS13335) www.bookatrainer.dk: 104.21.75.200 172.67.181.83 2606:4700:3031::ac43:b553 2606:4700:3035::6815:4bc8 (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u37065159.wl160.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u37065159.wl160.sendgrid.net	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

120ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	broken trust chain resolving 'bookatrainer.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

0ms

Field	Value
Serial	2411352138
Primary NS (MNAME)	isabel.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 18:31:06

Field	Value
Registrar	DANDOMAIN A/S
Registered	2023-09-03
Expires	2027-09-02 (312d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

29ms

41ms

34ms

AAAA

40ms

TXT

148ms

CAA

34ms

HTTPS

37ms

TLSA

16036ms

SOA

0ms

MTA-STS

55ms

DNSSEC

120ms

SRV

114ms

Total

17254ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 14:15:12	908ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-03 08:35:05	4485ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-27 07:31:21	580ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-21 17:38:38	655ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-19 10:22:10	1550ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-09 03:20:00	2852ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-25 11:16:15	648ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-07 11:30:12 shown	17254ms	2 NS 2 A 2 MX	❓ Unknown
2026-07-19 03:49:03	10204ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-26 04:33:19	1790ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-23 18:44:51	852ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-20 07:34:00	1064ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-16 15:55:54	470ms	2 NS 2 A 2 MX	🔓 Insecure