0x7f.dk

📜 Historical scan 2026-06-24 16:11:21  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

0x7f.dk is a .dk domain served by 2 nameservers (alec.ns.cloudflare.com, pat.ns.cloudflare.com). It was registered on 16 May 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.16.155 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.0x7f.dk. The zone is DNSSEC-signed but currently fails validation, 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   203ms
NameserverIP addressesPTRASN / ISP
alec.ns.cloudflare.com 108.162.193.59
172.64.33.59
173.245.59.59
2606:4700:58::adf5:3b3b
2803:f800:50::6ca2:c13b
2a06:98c1:50::ac40:213b		 alec.ns.cloudflare.com
alec.ns.cloudflare.com
alec.ns.cloudflare.com
alec.ns.cloudflare.com
alec.ns.cloudflare.com
alec.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
pat.ns.cloudflare.com 108.162.192.139
172.64.32.139
173.245.58.139
2606:4700:50::adf5:3a8b
2803:f800:50::6ca2:c08b
2a06:98c1:50::ac40:208b		 pat.ns.cloudflare.com
pat.ns.cloudflare.com
pat.ns.cloudflare.com
pat.ns.cloudflare.com
pat.ns.cloudflare.com
pat.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   180ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.16.155 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.213.171 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   196ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx.0x7f.dk 116.202.105.157
2a01:4f8:c013:bc40::25		 mx.0x7f.dk
mx.0x7f.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovermx.0x7f.dk → 116.202.105.157
🔶 Autoconfigmx.0x7f.dk → 116.202.105.157

🔷 AAAA Records (IPv6)#

2 records   284ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3035::ac43:d5ab 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::6815:109b 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   203ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.16.155,172.67.213.171 ech=AEX+DQBBuQAgACAvm/0aBCPA8lL0W8BJGlY+aQG5mSltXPg28U+pnur1XwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:d5ab,2606:4700:3037::6815:109b

🔌 SRV Records#

1 records   339ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 mx.0x7f.dk

📝 TXT Records#

1 records   545ms
TXT Record
v=spf1 include:spf.0x7f.dk ~all

✉️ SPF#

PolicyRecord (0x7f.dk)
~all (soft fail) v=spf1 include:spf.0x7f.dk ~all

📨 DMARC#

PolicyRecord (_dmarc.0x7f.dk)
p=quarantine v=DMARC1; p=quarantine; pct=100; rua=mailto:e65a6fc6@in.mailhardener.com; ruf=mailto:e65a6fc6@in.mailhardener.com

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

StatusReport address (rua)
✓ Enabled mailto:e65a6fc6@in.mailhardener.com

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 11:55:59
www104.21.16.155 172.67.213.171 2606:4700:3031::6815:109b 2606:4700:3033::ac43:d5ab (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found
SelectorCNAMEKey
dkim — RSA · ~4096 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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

1 records   293ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.0x7f.dk DANE-EE · SPKI · SHA-256 DEB7CC36CED3A151804FC2666448DF3A…

🔐 DNSSEC#

456ms
CheckResult
Validation Status⚠️ Bogus
AD Flag (resolver validates)✗ Not set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsbroken trust chain resolving '0x7f.dk/DS/IN': 127.0.0.1#53

🏷️ SOA#

268ms
FieldValue
Serial2407300703
Primary NS (MNAME)alec.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-11 23:56:44
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2025-05-16
Expires2027-05-15 (210d)

🔗 Same registrant#

1 domain

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).

DomainRegistrar
tue-jensen.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
203ms
A
180ms
MX
196ms
AAAA
284ms
TXT
545ms
CAA
267ms
HTTPS
203ms
TLSA
293ms
SOA
268ms
MTA-STS
236ms
DNSSEC
456ms
SRV
339ms
Total
5222ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-03 01:40:15 988ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-28 00:44:29 1288ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-24 07:56:31 1199ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-20 18:53:26 1172ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-11 01:41:46 2359ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-03 23:10:23 543ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-27 09:25:14 1142ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-26 22:38:04 1141ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-25 14:57:18 2080ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-24 13:10:42 1862ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-18 07:03:31 4020ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-16 20:42:31 5110ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-23 10:58:50 9030ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-06 14:39:38 1366ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-01 21:07:53 1426ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-24 22:25:45 2503ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-24 16:11:21 shown 5222ms 2 NS 2 A 1 MX ⚠️ Bogus
2026-06-24 07:40:37 1151ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-23 13:27:28 964ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-20 15:07:36 1320ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-16 12:33:31 1465ms 2 NS 2 A 1 MX 🔒 Secure
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