techsikker.dk

📜 Historical scan 2026-06-17 21:24:22  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

techsikker.dk is a .dk domain served by 2 nameservers (coco.ns.cloudflare.com, sid.ns.cloudflare.com). It was registered on 24 October 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.45.5 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.gnb-mail.dk. 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   283ms
NameserverIP addressesPTRASN / ISP
coco.ns.cloudflare.com 108.162.192.104
172.64.32.104
173.245.58.104
2606:4700:50::adf5:3a68
2803:f800:50::6ca2:c068
2a06:98c1:50::ac40:2068		 coco.ns.cloudflare.com
coco.ns.cloudflare.com
coco.ns.cloudflare.com
coco.ns.cloudflare.com
coco.ns.cloudflare.com
coco.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
sid.ns.cloudflare.com 108.162.193.143
172.64.33.143
173.245.59.143
2606:4700:58::adf5:3b8f
2803:f800:50::6ca2:c18f
2a06:98c1:50::ac40:218f		 sid.ns.cloudflare.com
sid.ns.cloudflare.com
sid.ns.cloudflare.com
sid.ns.cloudflare.com
sid.ns.cloudflare.com
sid.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   239ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.45.5 — — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.207.11 — — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   228ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mail.gnb-mail.dk 2a02:c206:2099:6999::1
75.119.145.21		 mail.gnb-mail.dk
mail.gnb-mail.dk		 AS51167 Contabo GmbH
AS51167 Contabo GmbH

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovermail.gnb-mail.dk → 75.119.145.21
🔶 Autoconfigmail.gnb-mail.dk → 75.119.145.21

🔷 AAAA Records (IPv6)#

2 records   230ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::ac43:cf0b — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::6815:2d05 — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   230ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.45.5,172.67.207.11 ech=AEX+DQBB/QAgACAXB3WSVMJCEvoNZQHmoN9vn+IfvWP22NyOkRp/+YwJXAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:cf0b,2606:4700:3037::6815:2d05

📝 TXT Records#

2 records   547ms
TXT Record
v=spf1 include:mx ~all
v=spf1 mx a:mail.gnb-mail.dk ip4:75.119.145.21 ip6:2a02:c206:2099:6999::1

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)
PolicyRecord (techsikker.dk)
~all (soft fail) v=spf1 include:mx ~all
no all — incomplete SPF v=spf1 mx a:mail.gnb-mail.dk ip4:75.119.145.21 ip6:2a02:c206:2099:6999::1

📨 DMARC#

PolicyRecord (_dmarc.techsikker.dk)
p=reject v=DMARC1; p=reject; rua=mailto:1c7eb4c7b6f346f1992fb3c6b848a3c8@dmarc-reports.cloudflare.net

📬 MTA-STS#

566ms
CheckResult
Status🔒 Enforce
TXT record (_mta-sts)✓ Found
HTTPS policy✓ Valid
Modeenforce
Policy ID20251024194204
max_age3600s
Policy MXmail.gnb-mail.dk

📈 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 2026-10-14 02:33:46
www104.21.45.5 172.67.207.11 2606:4700:3030::ac43:cf0b 2606:4700:3032::6815:2d05 (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 · ~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: 1/10 · policy: ~all

  • error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔗 TLSA / DANE#

1 records   345ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.gnb-mail.dk DANE-EE · SPKI · SHA-256 B8969D79FA155EC239BC9618B5DBAB35…

🔐 DNSSEC#

516ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

147ms
FieldValue
Serial2407201973
Primary NS (MNAME)coco.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-04 10:17:15
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2025-10-24
Expires2027-10-23 (368d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
283ms
A
239ms
MX
228ms
AAAA
230ms
TXT
547ms
CAA
302ms
HTTPS
230ms
TLSA
345ms
SOA
147ms
MTA-STS
566ms
DNSSEC
516ms
SRV
372ms
Total
3745ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-14 02:33:46 1257ms 2 NS 2 A 1 MX 🔒 Secure
2026-10-04 10:02:39 930ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-30 13:26:19 705ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-26 15:20:20 777ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-26 11:21:33 2790ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-17 13:51:59 3013ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-07 01:45:03 2579ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-22 16:18:14 9046ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-21 15:52:31 3752ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-18 11:36:16 1254ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-09 23:40:06 1256ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-23 22:29:40 9257ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-16 15:25:51 1025ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-26 19:33:54 965ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-25 03:42:30 1222ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-17 21:24:22 shown 3745ms 2 NS 2 A 1 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone