dfdf.dk

📜 Historical scan 2026-09-23 13:27:37 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dfdf.dk is a .dk domain served by 2 nameservers (candy.ns.cloudflare.com, kurt.ns.cloudflare.com). It was registered on 17 January 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.78 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by dfdf-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
candy.ns.cloudflare.com	108.162.192.79 172.64.32.79 173.245.58.79 2606:4700:50::adf5:3a4f 2803:f800:50::6ca2:c04f 2a06:98c1:50::ac40:204f	candy.ns.cloudflare.com candy.ns.cloudflare.com candy.ns.cloudflare.com candy.ns.cloudflare.com candy.ns.cloudflare.com candy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kurt.ns.cloudflare.com	108.162.193.193 172.64.33.193 173.245.59.193 2606:4700:58::adf5:3bc1 2803:f800:50::6ca2:c1c1 2a06:98c1:50::ac40:21c1	kurt.ns.cloudflare.com kurt.ns.cloudflare.com kurt.ns.cloudflare.com kurt.ns.cloudflare.com kurt.ns.cloudflare.com kurt.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.82.78	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.155.55	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 27ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	dfdf-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::20 2a01:111:f403:ca21::a 2a01:111:f403:ca3c::6 52.101.103.140 52.101.68.15 52.101.68.8 52.101.73.120	mail-db4pr02cu00204.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00300.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	104.21.82.78

🔷 AAAA Records (IPv6)#

2 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:9b37	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:524e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.82.78,172.67.155.55 ech=AEX+DQBBSwAgACD11o6crS/bLU3TWG3c5Ae/Qe5+Db736R+swrunvTY7YwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:9b37,2606:4700:3035::6815:524e

🔌 SRV Records#

1 records 69ms

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

📝 TXT Records#

1 records 178ms

TXT Record
v=spf1 ip4:83.142.229.104 +a +mx include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (dfdf.dk)
-all (hard fail)	v=spf1 ip4:83.142.229.104 +a +mx include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.dfdf.dk)
p=quarantine	v=DMARC1; p=quarantine;
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email;

📬 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 2026-10-16 08:02:51

www	104.21.82.78 172.67.155.55 2606:4700:3031::ac43:9b37 2606:4700:3035::6815:524e (AS13335) (address records, no CNAME)
www vs bare domain	Same network dfdf.dk: 104.21.82.78 172.67.155.55 2606:4700:3031::ac43:9b37 2606:4700:3035::6815:524e (AS13335) www.dfdf.dk: 104.21.82.78 172.67.155.55 2606:4700:3031::ac43:9b37 2606:4700:3035::6815:524e (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

4 found

Selector	CNAME	Key
s1	s1.domainkey.u20783286.wl037.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u20783286.wl037.sendgrid.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-dfdf-dk._domainkey.dfdfdk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-dfdf-dk._domainkey.dfdfdk.onmicrosoft.com	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: 3/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.dfdf.dk	RJopuDJibkqzoWD3AHQCbJpWhmtXB1O2xVR9Fyw12GM
TXT	_acme-challenge.dfdf.dk	l4nyjOr8gvToc6XDN2o6V3tftaELhDEMX1r22mDlwbY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

106ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415580232
Primary NS (MNAME)	candy.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 08:23:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-01-17
Expires	2027-03-31 (165d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

37ms

38ms

27ms

AAAA

47ms

TXT

178ms

CAA

36ms

HTTPS

31ms

TLSA

372ms

SOA

0ms

MTA-STS

65ms

DNSSEC

106ms

SRV

69ms

Total

1628ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 08:02:51	1968ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-27 17:15:19	2846ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 13:56:13	1319ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 13:27:37 shown	1628ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-22 06:51:58	2251ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-20 00:27:57	1084ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-29 04:06:44	2294ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-08 05:59:00	1959ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-26 08:20:42	9437ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-22 03:05:19	1566ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-11 21:30:18	3688ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-28 02:51:35	2199ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-27 07:20:08	1218ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-26 08:59:57	2664ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-19 16:20:36	2767ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 02:36:10	587ms	2 NS 2 A 1 MX	🔒 Secure