algoritma.dk

📜 Historical scan 2026-09-04 11:03:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

algoritma.dk is a .dk domain served by 2 nameservers (amber.ns.cloudflare.com, odin.ns.cloudflare.com). It was registered on 2 May 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.45.43 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 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 34ms

Nameserver	IP addresses	PTR	ASN / ISP
amber.ns.cloudflare.com	108.162.192.64 172.64.32.64 173.245.58.64 2606:4700:50::adf5:3a40 2803:f800:50::6ca2:c040 2a06:98c1:50::ac40:2040	amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
odin.ns.cloudflare.com	108.162.195.208 162.159.44.208 172.64.35.208 2606:4700:58::a29f:2cd0 2803:f800:50::6ca2:c3d0 2a06:98c1:50::ac40:23d0	odin.ns.cloudflare.com odin.ns.cloudflare.com odin.ns.cloudflare.com odin.ns.cloudflare.com odin.ns.cloudflare.com odin.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 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.45.43	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.209.107	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	173.194.221.26 2a00:1450:4010:c0b::1a 2a00:1450:4010:c0b::1a	lm-in-f26.1e100.net lo-in-f26.1e100.net lo-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1b	tp-in-f26.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 29ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:d16b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:2d2b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 32ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.45.43,172.67.209.107 ech=AEX+DQBBMAAgACC/AMALgVHPWDWE5Sj4k4HvAkkCX11BAf8SAciB6a98TQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:d16b,2606:4700:3035::6815:2d2b

📝 TXT Records#

3 records 154ms

TXT Record
google-site-verification=MnVFdnhNLKM0UwTDm60KAsE-ZuCpsCaOkwzHdYpO4e8
google-site-verification=SUdPMNYKd3GGzICyqHch-WkDFNUA_sdpqDCiOLHT7Sw
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (algoritma.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.algoritma.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:martin@algoritma.dk; adkim=r; aspf=r

📬 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 04:00:49

www	104.21.45.43 172.67.209.107 2606:4700:3033::ac43:d16b 2606:4700:3035::6815:2d2b (AS13335) (address records, no CNAME)
www vs bare domain	Same network algoritma.dk: 104.21.45.43 172.67.209.107 2606:4700:3033::ac43:d16b 2606:4700:3035::6815:2d2b (AS13335) www.algoritma.dk: 104.21.45.43 172.67.209.107 2606:4700:3033::ac43:d16b 2606:4700:3035::6815:2d2b (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

109ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413665003
Primary NS (MNAME)	amber.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 04:36:19

Field	Value
Registrar	DANDOMAIN A/S
Registered	2026-05-02
Expires	2027-05-01 (196d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

30ms

31ms

AAAA

29ms

TXT

154ms

CAA

32ms

HTTPS

32ms

TLSA

104ms

SOA

0ms

MTA-STS

42ms

DNSSEC

109ms

SRV

53ms

Total

717ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 04:00:49	736ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-29 20:53:30	728ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-26 03:07:59	2630ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-25 06:06:47	1139ms	2 NS 2 A 5 MX	🔒 Secure
2026-09-04 11:03:46 shown	717ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-30 03:54:06	1985ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-12 16:41:32	1564ms	2 NS 2 A 5 MX	🔒 Secure
2026-08-09 13:58:15	10502ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-17 09:06:35	3304ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-06 22:07:43	1581ms	2 NS 2 A 5 MX	🔒 Secure
2026-07-03 11:51:30	6927ms	2 NS 2 A 5 MX	🔒 Secure
2026-06-23 09:46:35	2854ms	2 NS 2 A 5 MX	🔒 Secure
2026-06-16 13:23:31	753ms	2 NS 2 A 5 MX	🔒 Secure