ottosen-it.dk

📜 Historical scan 2026-08-20 00:19:39 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ottosen-it.dk is a .dk domain served by 2 nameservers (algin.ns.cloudflare.com, bristol.ns.cloudflare.com). It was registered on 11 August 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.28.88 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by smtp.google.com. 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 186ms

Nameserver	IP addresses	PTR	ASN / ISP
algin.ns.cloudflare.com	108.162.193.61 172.64.33.61 173.245.59.61 2606:4700:58::adf5:3b3d 2803:f800:50::6ca2:c13d 2a06:98c1:50::ac40:213d	algin.ns.cloudflare.com algin.ns.cloudflare.com algin.ns.cloudflare.com algin.ns.cloudflare.com algin.ns.cloudflare.com algin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
bristol.ns.cloudflare.com	108.162.194.47 162.159.38.47 172.64.34.47 2606:4700:50::a29f:262f 2803:f800:50::6ca2:c22f 2a06:98c1:50::ac40:222f	bristol.ns.cloudflare.com bristol.ns.cloudflare.com bristol.ns.cloudflare.com bristol.ns.cloudflare.com bristol.ns.cloudflare.com bristol.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 222ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.28.88	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.170.113	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 284ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	smtp.google.com	142.251.127.26 142.251.127.27 2a00:1450:4001:c21::1a 2a00:1450:4001:c21::1b	lcfrai-in-f26.1e100.net lcfrai-in-f27.1e100.net lcfrai-in-f26.1e100.net lcfrai-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 251ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:aa71	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:1c58	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 254ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.28.88,172.67.170.113 ech=AEX+DQBBCwAgACBoocGDHpSy1Wk646dQgSDb6caPtXukGz3aH7eIeyomZQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:aa71,2606:4700:3032::6815:1c58

📝 TXT Records#

2 records 1133ms

TXT Record
google-site-verification=yzRmDNtrhGkM6yMwVXubkYYCxywZxQvGehcZNxzXJc4
v=spf1 include:_spf.google.com ~all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.ottosen-it.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:8ddab23fe16b4d2092ba7de8bbdcc148@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 2026-10-20 21:19:29

www	104.21.28.88 172.67.170.113 2606:4700:3030::ac43:aa71 2606:4700:3032::6815:1c58 (AS13335) (address records, no CNAME)
www vs bare domain	Same network ottosen-it.dk: 104.21.28.88 172.67.170.113 2606:4700:3030::ac43:aa71 2606:4700:3032::6815:1c58 (AS13335) www.ottosen-it.dk: 104.21.28.88 172.67.170.113 2606:4700:3030::ac43:aa71 2606:4700:3032::6815:1c58 (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#

707ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2412607101
Primary NS (MNAME)	algin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-18 20:19:24

Field	Value
Registrar	Simply.com A/S
Registered	2021-08-11
Expires	2027-08-31 (312d)

📋 WHOIS#

⏱️ Lookup Timing#

186ms

222ms

284ms

AAAA

251ms

TXT

1133ms

CAA

287ms

HTTPS

254ms

TLSA

701ms

SOA

0ms

MTA-STS

462ms

DNSSEC

707ms

SRV

314ms

Total

8537ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 21:19:29	562ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-18 19:57:36	1526ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-15 18:08:59	2739ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-12 15:20:46	3889ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-11 14:23:23	2080ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-10 13:37:50	2159ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-20 21:24:58	811ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-05 10:26:34	1230ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 22:00:21	696ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-20 00:19:39 shown	8537ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-18 23:33:05	7674ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-12 05:34:46	9472ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-06 19:56:54	2239ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-10 21:06:39	1414ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-21 21:26:55	704ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-20 18:50:44	628ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-20 03:37:29	1553ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-18 00:56:25	916ms	2 NS 2 A 1 MX	🔒 Secure