fsleder.dk

📜 Historical scan 2026-06-26 13:55:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fsleder.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 14 April 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.99 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by fsleder-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 36ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.99	300s	linux7.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	fsleder-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::d 2a01:111:f403:ca04::e 2a01:111:f403:ca09::3 52.101.68.27 52.101.68.36 52.101.73.1 52.101.73.30	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00306.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 → 40.104.116.8
🔶 Autoconfig	185.21.40.99

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 142ms

TXT Record
MS=ms38746337
v=spf1 include:spf.protection.outlook.com ip4:20.160.150.210 -all

✉️ SPF#

Policy	Record (fsleder.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com ip4:20.160.150.210 -all

📨 DMARC#

Policy	Record (_dmarc.fsleder.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100; rua=mailto:no-reply@fsleder.dk; ruf=mailto:no-reply@fsleder.dk

📬 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 2026-10-17 01:19:10

www	185.21.40.99 (AS48854) (address records, no CNAME)
www vs bare domain	Same network fsleder.dk: 185.21.40.99 (AS48854) www.fsleder.dk: 185.21.40.99 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-fsleder-dk._domainkey.fslederdk.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

62ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2025100201
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-14 21:29:20

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2009-04-14
Expires	2027-04-30 (192d)

🔗 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#

36ms

38ms

49ms

AAAA

46ms

TXT

142ms

CAA

27ms

HTTPS

42ms

TLSA

133ms

SOA

34ms

MTA-STS

39ms

DNSSEC

62ms

SRV

57ms

Total

777ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 03:16:48	1162ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-02 13:52:26	909ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 13:55:09 shown	777ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 15:18:02	1377ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 09:38:19	656ms	2 NS 1 A 1 MX	🔒 Secure