fdf.dk

📜 Historical scan 2026-08-26 07:38:52 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fdf.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 185.21.40.45 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 36ms

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
185.21.40.45	600s	linux28.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

5 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	172.253.130.27 2a00:1450:4010:c1c::1b	yulppbn-in-f27.1e100.net la-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 67ms

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

📝 TXT Records#

2 records 182ms

TXT Record
facebook-domain-verification=o0q5mhs5kd7xctwm6jpjbpooq5soj3
v=spf1 include:spf.protection.outlook.com include:_spf.google.com ip4:46.31.17.0/24 ip4:83.151.133.21/32 ip4:217.74.213.4/32 ip4:217.74.213.0/24 include:servers.mcsv.net include:spf.smtp2go.com include:steingabelgaard.dk include:spectra-systems.eu -all

✉️ SPF#

Policy	Record (fdf.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.google.com ip4:46.31.17.0/24 ip4:83.151.133.21/32 ip4:217.74.213.4/32 ip4:217.74.213.0/24 include:servers.mcsv.net include:spf.smtp2go.com include:steingabelgaard.dk include:spectra-systems.eu -all

📨 DMARC#

Policy	Record (_dmarc.fdf.dk)
p=quarantine	v=DMARC1; p=quarantine; sp=reject; pct=100; fo=1;

📬 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 2026-10-11 11:48:13

www	185.21.40.45 (AS48854) (address records, no CNAME)
www vs bare domain	Same network fdf.dk: 185.21.40.45 (AS48854) www.fdf.dk: 185.21.40.45 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit
mail	—	RSA · ~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: 7/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.fdf.dk	Ip4JEvcc86optduzzFcsWC8RWTZrN9eVVcouUHTadgM

🔗 TLSA / DANE#

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

🔐 DNSSEC#

81ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026032401
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#

36ms

43ms

30ms

AAAA

32ms

TXT

182ms

CAA

54ms

HTTPS

43ms

TLSA

69ms

SOA

0ms

MTA-STS

55ms

DNSSEC

81ms

SRV

67ms

Total

683ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 01:07:11	741ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-25 05:58:36	679ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-24 05:41:13	815ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-19 22:15:20	693ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-11 12:09:40	641ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-27 00:14:16	716ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-26 07:38:52 shown	683ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-16 00:59:27	5173ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-14 00:04:29	6991ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-17 10:15:59	742ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-17 10:14:49	4734ms	2 NS 1 A 5 MX	🔒 Secure