frdk.dk

📜 Historical scan 2026-06-29 23:24:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

frdk.dk is a .dk domain served by 3 nameservers (ns4.hostonline.dk, ns5.hostonline.dk, ns6.hostonline.dk). It was registered on 9 February 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.34 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by frdk-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#

3 records 44ms

Nameserver	IP addresses	PTR	ASN / ISP
ns4.hostonline.dk	217.195.185.243 2a02:188:6004:14::10	ns4.hostonline.dk ns4.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns5.hostonline.dk	217.195.185.244 2a02:188:6004:14::11	ns5.hostonline.dk ns5.hostonline.dk	AS31027 GlobalConnect A/S AS31027 GlobalConnect A/S
ns6.hostonline.dk	85.191.126.85	ns6.hostonline.dk	AS204274 AURA Fiber A/S

🌍 A Records#

1 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.34	60s	linux35.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	frdk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca09::20 2a01:111:f403:ca09::3 2a01:111:f403:ca09::9 52.101.68.18 52.101.73.12 52.101.73.30 52.101.73.6	mail-db9pr02cu00204.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 45ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

1 records 159ms

TXT Record
v=spf1 mx a include:spf.onlinemail.io include:_spf.hostonline.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (frdk.dk)
-all (hard fail)	v=spf1 mx a include:spf.onlinemail.io include:_spf.hostonline.dk include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.frdk.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 2026-10-14 13:31:07

www CNAME	frdk.dk (all on frdk.dk) → 185.21.42.34 (AS48854)
www vs bare domain	Same network frdk.dk: 185.21.42.34 (AS48854) www.frdk.dk: 185.21.42.34 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 10 iterations · 8-byte salt · opt-out RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 10/10 · policy: -all

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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

54ms

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

🏷️ SOA#

32ms

Field	Value
Serial	2026062602
Primary NS (MNAME)	ns4.hostonline.dk
Responsible (RNAME)	hostmaster@hostonline.dk
Refresh	86400s
Retry	7200s
Expire	3600000s
Minimum (neg-cache TTL)	172800s

📋 Registration#

WHOIS fetched 2026-10-05 03:47:35

Field	Value
Registrar	TS COMPUTER ApS
Registered	2000-02-09
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

34ms

30ms

AAAA

57ms

TXT

159ms

CAA

30ms

HTTPS

29ms

TLSA

252ms

SOA

32ms

MTA-STS

35ms

DNSSEC

54ms

SRV

45ms

Total

875ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 13:31:07	2176ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-09 04:51:48	1471ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-05 03:37:01	1056ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-30 03:06:59	984ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-25 01:42:32	883ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 11:09:25	921ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-21 21:04:20	1184ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-15 00:14:53	1305ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-07 22:19:37	1293ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-30 08:40:54	2405ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-26 14:44:47	10161ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-25 20:01:39	1625ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-20 05:35:37	1515ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-15 20:55:00	2287ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-12 04:43:59	1855ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-09 16:16:39	1810ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-31 07:46:18	1271ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-26 22:31:50	9497ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-21 20:42:27	2482ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-16 05:24:15	2429ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-11 06:30:15	1344ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-08 13:31:15	1559ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-01 07:39:35	916ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-29 23:24:31 shown	875ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-21 13:04:58	1270ms	3 NS 1 A 1 MX	🔒 Secure