kelbergtech.dk

📜 Historical scan 2026-06-19 23:57:49  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kelbergtech.dk is a .dk domain served by 2 nameservers (fred.ns.cloudflare.com, ines.ns.cloudflare.com). It was registered on 17 November 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.48.188 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.tutanota.de. 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   33ms
NameserverIP addressesPTRASN / ISP
fred.ns.cloudflare.com 108.162.193.113
172.64.33.113
173.245.59.113
2606:4700:58::adf5:3b71
2803:f800:50::6ca2:c171
2a06:98c1:50::ac40:2171		 fred.ns.cloudflare.com
fred.ns.cloudflare.com
fred.ns.cloudflare.com
fred.ns.cloudflare.com
fred.ns.cloudflare.com
fred.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
ines.ns.cloudflare.com 108.162.192.164
172.64.32.164
173.245.58.164
2606:4700:50::adf5:3aa4
2803:f800:50::6ca2:c0a4
2a06:98c1:50::ac40:20a4		 ines.ns.cloudflare.com
ines.ns.cloudflare.com
ines.ns.cloudflare.com
ines.ns.cloudflare.com
ines.ns.cloudflare.com
ines.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   38ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.48.188 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.136.201 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.tutanota.de 185.205.69.211
185.205.69.213
185.205.69.214		 mail.w11.tutanota.de
mail.w13.tutanota.de
mail.w14.tutanota.de		 AS210909 Tutao GmbH
AS210909 Tutao GmbH
AS210909 Tutao GmbH

🔷 AAAA Records (IPv6)#

2 records   41ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::ac43:88c9 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3033::6815:30bc 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   41ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.48.188,172.67.136.201 ech=AEX+DQBBjQAgACDLcc0IVU47ovwQ8f0u0keIUrvqMVxNDz7J9ttgklC2AQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:88c9,2606:4700:3033::6815:30bc

📝 TXT Records#

3 records   191ms
TXT Record
google-site-verification=3Ob7AmNihZJzZQFWSfMZH21w365dO0XezrdubgW_itg
t-verify=9920b79b55a8c5a2c923430fff90d0f1
v=spf1 include:spf.tutanota.de -all

✉️ SPF#

PolicyRecord (kelbergtech.dk)
-all (hard fail) v=spf1 include:spf.tutanota.de -all

📨 DMARC#

PolicyRecord (_dmarc.kelbergtech.dk)
p=quarantine v=DMARC1; p=quarantine; adkim=s

📬 MTA-STS#

297ms
CheckResult
Status🔒 Enforce
TXT record (_mta-sts)✓ Found
HTTPS policy✓ Valid
Modeenforce
Policy ID20190723
max_age86400s
Policy MXmail.tutanota.de

📈 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 2026-10-07 16:34:57
www104.21.48.188 172.67.136.201 2606:4700:3031::6815:30bc 2606:4700:3037::ac43:88c9 (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#

2 found
SelectorCNAMEKey
s1 s1.domainkey.tutanota.de RSA · ~2048 bit
s2 s2.domainkey.tutanota.de 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

No problems found

🔗 TLSA / DANE#

1 records   164ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.tutanota.de DANE-EE · Full cert · SHA-256 D141F8F3A4AAC2E4D2677AAFCC723D8E…

🔐 DNSSEC#

163ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

37ms
FieldValue
Serial2406664726
Primary NS (MNAME)fred.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-05 16:12:42
FieldValue
Registrarnordicway ApS
Registered2025-11-17
Expires2026-11-16 (29d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
33ms
A
38ms
MX
42ms
AAAA
41ms
TXT
191ms
CAA
37ms
HTTPS
41ms
TLSA
164ms
SOA
37ms
MTA-STS
297ms
DNSSEC
163ms
SRV
107ms
Total
727ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-05 15:49:44 730ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-30 15:10:25 602ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-26 07:37:36 954ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-24 07:07:15 2633ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-19 06:24:09 2085ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-05 04:13:18 2525ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-27 19:34:48 830ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-26 05:19:38 977ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-09 21:48:34 2097ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-17 04:20:06 1687ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-12 17:14:38 2933ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-27 01:46:34 1281ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-19 23:57:49 shown 727ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-17 13:19:20 1172ms 2 NS 2 A 1 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone