techsikker.dk

📜 Historical scan 2026-08-18 11:36:16  ·  ← 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   64ms
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   42ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.45.5 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.207.11 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   39ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s 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   60ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3030::ac43:cf0b 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3032::6815:2d05 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   66ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.45.5,172.67.207.11 ech=AEX+DQBBfwAgACBYR44KS5sLGA6fNQXZna/6HqcQ3JAAUbUvIIHTnDnsOAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cf0b,2606:4700:3032::6815:2d05

📝 TXT Records#

2 records   207ms
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#

223ms
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#

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

🔐 DNSSEC#

82ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2412305451
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 (369d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
64ms
A
42ms
MX
39ms
AAAA
60ms
TXT
207ms
CAA
54ms
HTTPS
66ms
TLSA
72ms
SOA
0ms
MTA-STS
223ms
DNSSEC
82ms
SRV
82ms
Total
1254ms

🕐 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 shown 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 3745ms 2 NS 2 A 1 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone