jfa.dk

📜 Historical scan 2026-09-24 05:05:56 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jfa.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 September 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 131.164.253.175 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by jfa-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 44ms

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 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
131.164.253.175	3600s	—	AS3292	TDC Holding A/S	131.164.0.0/16	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	jfa-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::b 2a01:111:f403:ca04::e 2a01:111:f403:ca48::e 52.101.103.143 52.101.103.162 52.101.209.153 52.101.91.21	mail-db7pr03cu00601.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-matpr05cu00105.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 65ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	10	443	m.jfa.dk

📝 TXT Records#

2 records 144ms

TXT Record
MS=ms58897224
v=spf1 mx a:mail.spam-fri.dk a:mail.infrateam.dk a:maile.spam-fri.dk a:exchange.spam-fri.dk ip4:131.164.122.200/29 ip4:94.18.116.44/28 ip4:2.111.132.150 ip4:93.176.73.200 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (jfa.dk)
-all (hard fail)	v=spf1 mx a:mail.spam-fri.dk a:mail.infrateam.dk a:maile.spam-fri.dk a:exchange.spam-fri.dk ip4:131.164.122.200/29 ip4:94.18.116.44/28 ip4:2.111.132.150 ip4:93.176.73.200 include:spf.protection.outlook.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-20 03:48:23

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Different networks jfa.dk: 131.164.253.175 (AS3292) www.jfa.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.jfa.dk	VDBiL7oji19IJ_Ju881JCUpKRkR_yUIGRKiBZIn0mu8

🔗 TLSA / DANE#

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

🔐 DNSSEC#

105ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-20 13:01:07

Field	Value
Registrar	ONE.COM A/S
Registered	1998-09-23
Expires	2027-09-30 (342d)

🔗 Same registrant#

3 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
netheste.dk	ONE.COM A/S
nforn.dk	ONE.COM A/S
spam-fri.dk	ONE.COM A/S

📋 WHOIS#

⏱️ Lookup Timing#

44ms

36ms

35ms

AAAA

37ms

TXT

144ms

CAA

30ms

HTTPS

28ms

TLSA

309ms

SOA

0ms

MTA-STS

50ms

DNSSEC

105ms

SRV

65ms

Total

896ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 03:48:23	1562ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 06:27:17	2726ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 05:05:56 shown	896ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 18:45:25	1129ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 15:44:13	1524ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 02:17:41	841ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 06:15:37	1019ms	2 NS 1 A 1 MX	🔒 Secure