techsikker.dk

Records from scan: 2026-10-20 12:39:16  ·  2105ms total
⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   74ms
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   105ms
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   99ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.gnb-mail.dk 159.195.249.93
2a0a:4cc0:60:2a79:a41c:10ff:febc:cb86		 mail.gnb-mail.dk
mail.gnb-mail.dk		 AS197540 netcup GmbH
AS197540 netcup GmbH

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovermail.gnb-mail.dk → 159.195.249.93
🔶 Autoconfigmail.gnb-mail.dk → 159.195.249.93

🔷 AAAA Records (IPv6)#

2 records   100ms
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   117ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.45.5,172.67.207.11 ech=AEX+DQBBXAAgACBlZTWGoFpY/zVidAfLbUXorG9pbxOqSqzVUhRTw/TDXQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cf0b,2606:4700:3032::6815:2d05

📝 TXT Records#

2 records   272ms
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#

323ms
CheckResult
Status⚠️ Invalid
TXT record (_mta-sts)✓ Found
HTTPS policy✗ Missing / invalid
Policy ID20251024194204
Policy MX—

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

checked 2026-10-20 12:39:16
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#

207ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

59ms
FieldValue
Serial2417917222
Primary NS (MNAME)coco.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-20 13:20:36
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2025-10-24
Expires2027-10-23 (367d)

🔗 Same registrant#

2 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).

DomainRegistrar
brbeck.dkPunktum dk A/S (direct)
silver-monkeys.dkdns.services ApS
📋 WHOIS#

⏱️ Lookup Timing#

NS
74ms
A
105ms
MX
99ms
AAAA
100ms
TXT
272ms
CAA
144ms
HTTPS
117ms
TLSA
298ms
SOA
59ms
MTA-STS
323ms
DNSSEC
207ms
SRV
156ms
Total
2105ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-20 12:39:16 shown 2105ms 2 NS 2 A 1 MX 🔒 Secure
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 3745ms 2 NS 2 A 1 MX 🔒 Secure
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