altk.dk

📜 Historical scan 2026-06-16 12:37:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

altk.dk is a .dk domain served by 2 nameservers (harlan.ns.cloudflare.com, nancy.ns.cloudflare.com). It was registered on 7 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.45.183 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx4.spamfri.dk, mx2.spamfri.dk and 2 more. 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 21ms

Nameserver	IP addresses	PTR	ASN / ISP
harlan.ns.cloudflare.com	—	—	—
nancy.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 120ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.45.183	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.218.29	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

4 records 115ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx4.spamfri.dk	193.200.91.108	mx4.spamfri.dk	AS62121 Christian Ebsen ApS
20	—	mx2.spamfri.dk	193.200.91.109	mx2.spamfri.dk	AS62121 Christian Ebsen ApS
30	—	mx3.spamfri.dk	62.69.152.43 62.69.152.43	43.34-46.152.69.62.in-addr.arpa mx3.spamfri.dk	AS47527 DLX A/S AS47527 DLX A/S
40	—	mx1.spamfri.dk	195.242.131.16	mx1.spamfri.dk	AS62121 Christian Ebsen ApS

🔷 AAAA Records (IPv6)#

2 records 130ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:2db7	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:da1d	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 115ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.45.183,172.67.218.29 ech=AEX+DQBBzAAgACCRSl2GarTD7edzme/SRSjBGfCZcUyEhedgk/e1csdNQwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2db7,2606:4700:3035::ac43:da1d

📝 TXT Records#

2 records 200ms

TXT Record
brevo-code:62d8625b4c3bbc38e01ed15cd9276849
v=spf1 +a +mx +ip4:193.200.90.102 include:_spf.e-studio.dk ~all

✉️ SPF#

Policy	Record (altk.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:193.200.90.102 include:_spf.e-studio.dk ~all

📨 DMARC#

Policy	Record (_dmarc.altk.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com

📬 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 2026-10-08 16:51:55

www	104.21.45.183 172.67.218.29 2606:4700:3037::6815:2db7 2606:4700:3037::ac43:da1d (AS13335) (address records, no CNAME)
www vs bare domain	Same network altk.dk: 104.21.45.183 172.67.218.29 2606:4700:3037::6815:2db7 2606:4700:3037::ac43:da1d (AS13335) www.altk.dk: 104.21.45.183 172.67.218.29 2606:4700:3037::6815:2db7 2606:4700:3037::ac43:da1d (AS13335)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA Invalid key data — receivers can't verify signatures

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#

4 records 63ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.spamfri.dk	DANE-EE · SPKI · SHA-256	884451547A03D0AC2F628D943839BAA6…
SMTP _25._tcp.mx2.spamfri.dk	DANE-EE · SPKI · SHA-256	6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk	DANE-EE · SPKI · SHA-256	BBFB0694919290E5BC9D6E2C6F47D846…
SMTP _25._tcp.mx4.spamfri.dk	DANE-EE · SPKI · SHA-256	4EE743A99328AEF5142706CA5FD3AD61…

🔐 DNSSEC#

227ms

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

🏷️ SOA#

128ms

Field	Value
Serial	2406740362
Primary NS (MNAME)	harlan.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 17:01:47

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2026-04-07
Expires	2027-04-06 (170d)

📋 WHOIS#

⏱️ Lookup Timing#

21ms

120ms

115ms

AAAA

130ms

TXT

200ms

CAA

117ms

HTTPS

115ms

TLSA

63ms

SOA

128ms

MTA-STS

35ms

DNSSEC

227ms

SRV

0ms

Total

973ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 16:51:55	917ms	2 NS 2 A 4 MX	🔓 Insecure
2026-10-02 14:52:19	1031ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-26 11:06:12	3507ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-10 02:46:42	4552ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-05 18:41:04	1915ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-28 04:40:49	2417ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-24 00:11:29	1152ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-20 16:03:26	1432ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-16 12:37:23 shown	973ms	2 NS 2 A 4 MX	🔓 Insecure