frdk.dk

📜 Historical scan 2026-09-24 11:09:25 · ← 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 36ms

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 57ms

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 26ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	frdk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca09::22 2a01:111:f403:ca21::a 2a01:111:f403:ca48::12 52.101.103.137 52.101.103.140 52.101.185.114 52.101.91.159	mail-du0pr03cu00102.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-matpr04cu00207.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 51ms

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

📝 TXT Records#

1 records 134ms

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 2026-10-19 19:54:54

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#

114ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092402
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 2026-10-19 12:58:10

Field	Value
Registrar	TS COMPUTER ApS
Registered	2000-02-09
Expires	2027-03-31 (159d)

🔗 Same registrant#

5 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).

Domain	Registrar
carbonfarm.dk	TS COMPUTER ApS
conservationagriculture.dk	TS COMPUTER ApS
pløjefrilærebog.dk	TS COMPUTER ApS
shopfrdk.dk	TS COMPUTER ApS
sundjord.dk	TS COMPUTER ApS

📋 WHOIS#

⏱️ Lookup Timing#

36ms

57ms

26ms

AAAA

34ms

TXT

134ms

CAA

33ms

HTTPS

40ms

TLSA

303ms

SOA

0ms

MTA-STS

49ms

DNSSEC

114ms

SRV

51ms

Total

921ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-19 19:54:54	1922ms	3 NS 1 A 1 MX	🔒 Secure
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 shown	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	875ms	3 NS 1 A 1 MX	🔒 Secure