jfa.dk

📜 Historical scan 2026-07-02 15:44:13 · ← 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 405ms

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 410ms

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 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	jfa-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::4 2a01:111:f403:ca09::6 2a01:111:f403:ca09::9 52.101.68.27 52.101.73.15 52.101.73.19 52.101.73.28	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00204.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 436ms

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

📝 TXT Records#

2 records 500ms

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#

496ms

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

🏷️ SOA#

46ms

Field	Value
Serial	2026050501
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 (343d)

🔗 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#

405ms

410ms

61ms

AAAA

426ms

TXT

500ms

CAA

407ms

HTTPS

428ms

TLSA

258ms

SOA

46ms

MTA-STS

51ms

DNSSEC

496ms

SRV

436ms

Total

1524ms

🕐 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	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 shown	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