fsu.dk

📜 Historical scan 2026-09-22 17:24:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fsu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.215 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by fsu-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 34ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.215	600s	prolinux4.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	fsu-dk.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::a 2a01:111:f403:ca21::8 2a01:111:f403:ca21::c 52.101.103.36 52.101.103.39 52.101.68.15 52.101.91.162	mail-db7pr03cu00507.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-matpr04cu00302.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 → 52.98.149.136
🔶 Autoconfig	fsu.dk → 185.21.41.215

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 61ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 161ms

TXT Record
MS=ms14240887
v=spf1 include:spf.protection.outlook.com include:spf.unoeuro.com include:mailgun.org ip4:5.103.13.44 -all

✉️ SPF#

Policy	Record (fsu.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.unoeuro.com include:mailgun.org ip4:5.103.13.44 -all

📨 DMARC#

Policy	Record (_dmarc.fsu.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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 2026-10-13 13:41:13

www CNAME	fsu.dk (all on fsu.dk) → 185.21.41.215 (AS48854)
www vs bare domain	Same network fsu.dk: 185.21.41.215 (AS48854) www.fsu.dk: 185.21.41.215 (AS48854)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
k1	—	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: 8/10 · policy: -all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.fsu.dk	fsu.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

69ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026091101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

34ms

43ms

44ms

AAAA

44ms

TXT

161ms

CAA

38ms

HTTPS

43ms

TLSA

238ms

SOA

0ms

MTA-STS

41ms

DNSSEC

69ms

SRV

61ms

Total

773ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 13:41:13	1124ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 20:39:51	759ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-22 17:24:48 shown	773ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-12 18:07:54	911ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-11 02:03:53	2956ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 12:44:04	1148ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 17:17:33	854ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 14:31:33	5223ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-12 14:11:04	1217ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-19 14:03:56	1203ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-17 09:36:20	1695ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 12:17:18	2693ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 22:53:30	2732ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 02:55:05	920ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 23:33:23	1203ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 13:55:18	574ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 09:20:42	1049ms	2 NS 1 A 1 MX	🔒 Secure