flbuur.dk

📜 Historical scan 2026-08-20 22:21:52 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

flbuur.dk is a .dk domain served by 2 nameservers (jihoon.ns.cloudflare.com, june.ns.cloudflare.com). It was registered on 14 August 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.130 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by flbuur-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 355ms

Nameserver	IP addresses	PTR	ASN / ISP
jihoon.ns.cloudflare.com	108.162.195.233 162.159.44.233 172.64.35.233 2606:4700:58::a29f:2ce9 2803:f800:50::6ca2:c3e9 2a06:98c1:50::ac40:23e9	jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
june.ns.cloudflare.com	108.162.192.176 172.64.32.176 173.245.58.176 2606:4700:50::adf5:3ab0 2803:f800:50::6ca2:c0b0 2a06:98c1:50::ac40:20b0	june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com june.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 345ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.130	300s	linux102.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 388ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	flbuur-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::8 2a01:111:f403:ca09::7 2a01:111:f403:ca09::c 52.101.68.15 52.101.73.19 52.101.73.2 52.101.73.8	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am0pr04cu00500.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	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 406ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	5	10	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 1055ms

TXT Record
v=DMARC1; p=none
v=spf1 include:spf.protection.outlook.com include:spf.onlinemail.io -all

✉️ SPF#

Policy	Record (flbuur.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.onlinemail.io -all

📨 DMARC#

Policy	Record (_dmarc.flbuur.dk)
p=reject	v=DMARC1; p=reject; sp=none; adkim=r; aspf=r; fo=1; rf=afrf; rua=mailto:dmarc@cloudpit.dk; ruf=mailto:dmarc@cloudpit.dk; 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 2026-10-11 11:25:06

www CNAME	flbuur.dk (all on flbuur.dk) → 185.21.41.130 (AS48854)
www vs bare domain	Same network flbuur.dk: 185.21.41.130 (AS48854) www.flbuur.dk: 185.21.41.130 (AS48854)
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
selector1	selector1-flbuur-dk._domainkey.flbuurdk.onmicrosoft.com	RSA · ~1024 bit below 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: 4/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.flbuur.dk	L3WxtmkLM67BrKxCskgfQuep7THiGk-CHRoGIbQsRcY
TXT	_acme-challenge.flbuur.dk	M0-LaN2P4pUC8DFEeCfcwB7UfnNM80UK7v4uTIbM2D8

🔗 TLSA / DANE#

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

🔐 DNSSEC#

653ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2412706094
Primary NS (MNAME)	jihoon.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 12:00:18

Field	Value
Registrar	NYGREEN IT ApS
Registered	2001-08-14
Expires	2027-09-30 (347d)

🔗 Same registrant#

0 domains

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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

355ms

345ms

388ms

AAAA

377ms

TXT

1055ms

CAA

338ms

HTTPS

349ms

TLSA

722ms

SOA

0ms

MTA-STS

526ms

DNSSEC

653ms

SRV

406ms

Total

13730ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 11:25:06	1588ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 20:23:20	665ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-27 06:24:08	929ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 05:51:29	1807ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 05:18:34	1105ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-19 04:02:28	1489ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-16 17:17:41	1193ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-13 12:53:10	1033ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-24 02:28:37	1568ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 22:21:52 shown	13730ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-06 15:39:20	2353ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-28 17:09:25	1355ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-17 20:18:43	1590ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-08 14:34:54	1991ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 07:38:55	7896ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 14:11:53	1302ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 10:15:49	3452ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 10:14:29	1418ms	2 NS 1 A 1 MX	🔒 Secure