duoline.dk

📜 Historical scan 2026-06-27 21:06:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

duoline.dk is a .dk domain served by 2 nameservers (dimitris.ns.cloudflare.com, ursula.ns.cloudflare.com). It was registered on 10 April 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.11.197 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by duoline.dk.mail.protection.outlook.com, duoline-dk.mail.protection.outlook.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 44ms

Nameserver	IP addresses	PTR	ASN / ISP
dimitris.ns.cloudflare.com	108.162.195.6 162.159.44.6 172.64.35.6 2606:4700:58::a29f:2c06 2803:f800:50::6ca2:c306 2a06:98c1:50::ac40:2306	dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ursula.ns.cloudflare.com	108.162.194.191 162.159.38.191 172.64.34.191 2606:4700:50::a29f:26bf 2803:f800:50::6ca2:c2bf 2a06:98c1:50::ac40:22bf	ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.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 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.11.197	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.150.60	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	duoline.dk.mail.protection.outlook.com	—	—	—
10	300s	duoline-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::4 2a01:111:f403:ca09::7 2a01:111:f403:ca09::f 52.101.68.27 52.101.68.29 52.101.68.39 52.101.68.8	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.11.197
🔶 Autoconfig	104.21.11.197

🔷 AAAA Records (IPv6)#

2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:963c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:bc5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 42ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.11.197,172.67.150.60 ech=AEX+DQBBSAAgACCOApx+y3HkBBLU7e54bmekbLMY/8udBNfIuQpUNaPYQgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:963c,2606:4700:3034::6815:bc5

📝 TXT Records#

4 records 217ms

TXT Record
facebook-domain-verification=ijuxmezh8ic169cb1dlh7991pwvosz
google-site-verification=b5eqOASjHy-UNz_9OTzBo8FUD_YlAWY44UiSNfcPIrs
MS=ms12901953
v=spf1 include:spf.protection.outlook.com ip4:93.191.156.43/32 include:servers.mcsv.net include:dedicated.mysmtp.com -all

✉️ SPF#

Policy	Record (duoline.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com ip4:93.191.156.43/32 include:servers.mcsv.net include:dedicated.mysmtp.com -all

📨 DMARC#

Policy	Record (_dmarc.duoline.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; rua=mailto:abuse@duoline.dk; ruf=mailto:abuse@duoline.dk; fo=0; pct=100; ri=86400

📬 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 2026-10-18 23:29:37

www	104.21.11.197 172.67.150.60 2606:4700:3031::ac43:963c 2606:4700:3034::6815:bc5 (AS13335) (address records, no CNAME)
www vs bare domain	Same network duoline.dk: 104.21.11.197 172.67.150.60 2606:4700:3031::ac43:963c 2606:4700:3034::6815:bc5 (AS13335) www.duoline.dk: 104.21.11.197 172.67.150.60 2606:4700:3031::ac43:963c 2606:4700:3034::6815:bc5 (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-duoline-dk._domainkey.duoline.onmicrosoft.com	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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

56ms

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

🏷️ SOA#

36ms

Field	Value
Serial	2407456076
Primary NS (MNAME)	dimitris.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 23:57:30

Field	Value
Registrar	Simply.com A/S
Registered	2001-04-10
Expires	2027-06-30 (250d)

🔗 Same registrant#

1 domain

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).

Domain	Registrar
aquatronic.dk	WEBHOSTING A/S

📋 WHOIS#

⏱️ Lookup Timing#

44ms

51ms

37ms

AAAA

43ms

TXT

217ms

CAA

34ms

HTTPS

42ms

TLSA

215ms

SOA

36ms

MTA-STS

56ms

DNSSEC

56ms

SRV

77ms

Total

1138ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-18 23:29:37	1936ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-16 21:49:47	1379ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-23 14:32:32	1416ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-18 22:27:18	1821ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-27 07:14:23	1517ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-24 22:04:00	9882ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-20 21:23:30	3770ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-18 14:28:51	2320ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-17 13:46:31	10047ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-27 21:06:33 shown	1138ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-27 08:23:03	1592ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-25 08:12:29	1108ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-22 18:53:28	2182ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-22 02:55:48	1118ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 05:24:04	1695ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 05:23:53	13712ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 05:11:22	3323ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 05:07:46	895ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 05:00:50	1335ms	2 NS 2 A 2 MX	🔓 Insecure