derbyguide.dk

📜 Historical scan 2026-10-03 14:42:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

derbyguide.dk is a .dk domain served by 2 nameservers (irena.ns.cloudflare.com, kolton.ns.cloudflare.com). It was registered on 20 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.30.173 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.derbyguide.dk. The zone is not DNSSEC-signed, 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 44ms

Nameserver	IP addresses	PTR	ASN / ISP
irena.ns.cloudflare.com	108.162.194.79 162.159.38.79 172.64.34.79 2606:4700:50::a29f:264f 2803:f800:50::6ca2:c24f 2a06:98c1:50::ac40:224f	irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com irena.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kolton.ns.cloudflare.com	108.162.195.25 162.159.44.25 172.64.35.25 2606:4700:58::a29f:2c19 2803:f800:50::6ca2:c319 2a06:98c1:50::ac40:2319	kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.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 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.30.173	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.173.121	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.derbyguide.dk	65.109.122.37	s1.seofy.dk	AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.30.173
🔶 Autoconfig	104.21.30.173

🔷 AAAA Records (IPv6)#

2 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:1ead	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:ad79	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 30ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.30.173,172.67.173.121 ech=AEX+DQBBegAgACCx3qCMx2sl/YwK/9VBfF0NIc+D2hlUcJ6lu5urwynmSAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:1ead,2606:4700:3034::ac43:ad79

📝 TXT Records#

1 records 230ms

TXT Record
v=spf1 ip4:65.109.122.37 ~all

✉️ SPF#

Policy	Record (derbyguide.dk)
~all (soft fail)	v=spf1 ip4:65.109.122.37 ~all

📨 DMARC#

Policy	Record (_dmarc.derbyguide.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:kontakt@derbyguide.dk

📬 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 2026-10-13 02:34:55

www	104.21.30.173 172.67.173.121 2606:4700:3033::6815:1ead 2606:4700:3034::ac43:ad79 (AS13335) (address records, no CNAME)
www vs bare domain	Same network derbyguide.dk: 104.21.30.173 172.67.173.121 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.derbyguide.dk: 104.21.30.173 172.67.173.121 2606:4700:3033::6815:1ead 2606:4700:3034::ac43:ad79 (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 0/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

67ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2416432034
Primary NS (MNAME)	irena.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-04 15:41:39

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2026-04-20
Expires	2027-04-19 (184d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

53ms

40ms

AAAA

38ms

TXT

230ms

CAA

31ms

HTTPS

30ms

TLSA

79ms

SOA

27ms

MTA-STS

65ms

DNSSEC

67ms

SRV

80ms

Total

549ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 14:49:21	582ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-03 14:42:35 shown	549ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 13:47:08	1198ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-10 10:34:57	2442ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-11 08:49:21	1229ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-25 23:50:39	465ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 20:03:54	446ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 02:05:30	380ms	2 NS 1 A 0 MX	🔒 Secure