heff.dk

📜 Historical scan 2026-07-28 23:33:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

heff.dk is a .dk domain served by 2 nameservers (damiete.ns.cloudflare.com, tegan.ns.cloudflare.com). It was registered on 14 October 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.48.145 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by heff-dk.mail.protection.outlook.com, gw.heff.dk and 1 more. 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 21ms

Nameserver	IP addresses	PTR	ASN / ISP
damiete.ns.cloudflare.com	108.162.195.32 162.159.44.32 172.64.35.32 2606:4700:58::a29f:2c20 2803:f800:50::6ca2:c320 2a06:98c1:50::ac40:2320	damiete.ns.cloudflare.com damiete.ns.cloudflare.com damiete.ns.cloudflare.com damiete.ns.cloudflare.com damiete.ns.cloudflare.com damiete.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tegan.ns.cloudflare.com	108.162.192.226 172.64.32.226 173.245.58.226 2606:4700:50::adf5:3ae2 2803:f800:50::6ca2:c0e2 2a06:98c1:50::ac40:20e2	tegan.ns.cloudflare.com tegan.ns.cloudflare.com tegan.ns.cloudflare.com tegan.ns.cloudflare.com tegan.ns.cloudflare.com tegan.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 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.48.145	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.223.212	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

3 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	heff-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::a 2a01:111:f403:ca09:: 2a01:111:f403:ca09::b 52.101.68.15 52.101.68.27 52.101.73.19 52.101.73.4	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am0pr83cu00404.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
15	300s	gw.heff.dk	95.138.218.168	gw.heff.dk	AS39642 Sinal A/S
25	300s	gw.mxbox.dk	93.166.126.58	93-166-126-58-static.dk.customer.tdc.net	AS3292 TDC Holding A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:dfd4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:3091	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=104.21.48.145,172.67.223.212 ech=AEX+DQBBYQAgACA+cie40loyfkus9cMyiTe9uMeZkCy4bq6pBeTW5Y8RMAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:dfd4,2606:4700:3037::6815:3091

🔌 SRV Records#

1 records 97ms

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

📝 TXT Records#

5 records 214ms

TXT Record
adobe-idp-site-verification=a2e1f796803886425fbd7528434be1892fad336215fb4ab79d9cf67efd7fccaa
apple-domain-verification=1YgqfmR6Q2JU6NFt
MS=ms98466033
v=spf1 mx include:spf.protection.outlook.com -all
VY3E0D0OqDryaW0JgsecDnakD1bA7uMePEQnSzhjAWf7TNrKuZXbtxu+s88APM8b7gjUeegIpQAyPw7hE5rHuw==

✉️ SPF#

Policy	Record (heff.dk)
-all (hard fail)	v=spf1 mx include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.heff.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc.rua@mxbox.dk ; ruf=mailto:dmarc.ruf@mxbox.dk;

📬 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 2026-10-09 12:46:16

www	185.31.76.93 (AS47527) (address records, no CNAME)
www vs bare domain	Different networks heff.dk: 104.21.48.145 172.67.223.212 2606:4700:3034::ac43:dfd4 2606:4700:3037::6815:3091 (AS13335) www.heff.dk: 185.31.76.93 (AS47527) (all like this)
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#

2 found

Selector	CNAME	Key
selector1	selector1-heff-dk._domainkey.dkheff.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-heff-dk._domainkey.dkheff.onmicrosoft.com	RSA · ~1024 bit below 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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9061ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2410711701
Primary NS (MNAME)	damiete.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-12 17:41:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-10-14
Expires	2029-10-31 (1110d)

🔗 Same registrant#

11 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
bio2energy.dk	Punktum dk A/S (direct)
fiskeweekend.dk	Punktum dk A/S (direct)
hgent.dk	Punktum dk A/S (direct)
it-geek.dk	Punktum dk A/S (direct)
khammer.dk	Punktum dk A/S (direct)
kjepsen.dk	Punktum dk A/S (direct)
lboks.dk	Punktum dk A/S (direct)
lbox.dk	Punktum dk A/S (direct)
lwh.dk	Punktum dk A/S (direct)
net-help.dk	Punktum dk A/S (direct)
whammer.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

21ms

35ms

30ms

AAAA

40ms

TXT

214ms

CAA

31ms

HTTPS

31ms

TLSA

341ms

SOA

0ms

MTA-STS

48ms

DNSSEC

9061ms

SRV

97ms

Total

10820ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 12:46:16	1428ms	2 NS 2 A 3 MX	🔒 Secure
2026-10-08 11:07:54	2072ms	2 NS 2 A 3 MX	🔒 Secure
2026-10-07 10:55:24	2707ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-27 05:51:11	1769ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-24 04:33:57	2268ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-13 16:51:06	2163ms	2 NS 2 A 3 MX	🔒 Secure
2026-09-03 17:48:37	1868ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-27 17:02:50	1006ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-26 07:53:58	1313ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-21 05:32:54	7304ms	2 NS 2 A 3 MX	🔒 Secure
2026-08-09 05:51:20	2920ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-28 23:33:09 shown	10820ms	2 NS 2 A 3 MX	🔒 Secure
2026-07-26 09:34:13	1589ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-21 12:11:19	3667ms	2 NS 2 A 3 MX	🔓 Insecure
2026-07-07 02:19:48	26747ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-27 19:44:05	3164ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-26 21:36:59	1193ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-17 11:07:02	2538ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-17 10:58:32	1950ms	2 NS 2 A 3 MX	🔓 Insecure