roskildetandteknik.dk

📜 Historical scan 2026-08-06 14:53:14  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

roskildetandteknik.dk is a .dk domain served by 2 nameservers (dave.ns.cloudflare.com, marge.ns.cloudflare.com). It was registered on 15 May 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.30.226 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.flexmail.dk. The zone is not DNSSEC-signed, 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   49ms
NameserverIP addressesPTRASN / ISP
dave.ns.cloudflare.com 108.162.193.109
172.64.33.109
173.245.59.109
2606:4700:58::adf5:3b6d
2803:f800:50::6ca2:c16d
2a06:98c1:50::ac40:216d		 dave.ns.cloudflare.com
dave.ns.cloudflare.com
dave.ns.cloudflare.com
dave.ns.cloudflare.com
dave.ns.cloudflare.com
dave.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
marge.ns.cloudflare.com 108.162.192.191
172.64.32.191
173.245.58.191
2606:4700:50::adf5:3abf
2803:f800:50::6ca2:c0bf
2a06:98c1:50::ac40:20bf		 marge.ns.cloudflare.com
marge.ns.cloudflare.com
marge.ns.cloudflare.com
marge.ns.cloudflare.com
marge.ns.cloudflare.com
marge.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   46ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.30.226 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.173.229 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   58ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.flexmail.dk 57.129.53.233 flex30.flexnet.dk AS16276 OVH SAS

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverflex30.flexnet.dk → 57.129.53.233
🔶 Autoconfigflex30.flexnet.dk → 57.129.53.233

🔷 AAAA Records (IPv6)#

2 records   36ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3030::6815:1ee2 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3031::ac43:ade5 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   32ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.30.226,172.67.173.229 ech=AEX+DQBBcQAgACDF+7E/wt72POh9yP5+npEKC5Q8zO91LUFqEHDG3wv0OAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:1ee2,2606:4700:3031::ac43:ade5

🔌 SRV Records#

2 records   80ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 autoconfig.flexmail.dk
_imaps._tcp 0 0 993 mail.flexmail.dk

📝 TXT Records#

2 records   179ms
TXT Record
google-site-verification=aiAmrtNQPyKOENK2nlM23s_JJvNX9nB-V7D91KZiR8E
v=spf1 a mx include:spf.smtp2go.net include:eu.mailgun.org ~all

✉️ SPF#

PolicyRecord (roskildetandteknik.dk)
~all (soft fail) v=spf1 a mx include:spf.smtp2go.net include:eu.mailgun.org ~all

📨 DMARC#

PolicyRecord (_dmarc.roskildetandteknik.dk)
p=none (monitor only) v=DMARC1; p=none; rua=dmarc-reports@flexnet.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 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 2026-10-23 18:59:05
www104.21.30.226 172.67.173.229 2606:4700:3030::6815:1ee2 2606:4700:3031::ac43:ade5 (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
default — RSA · ~1024 bit below 2048 bit
k1 — 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: 5/10 · policy: ~all

  • error include:spf.smtp2go.net has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

1 records   69ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.flexmail.dk DANE-EE · SPKI · SHA-256 75F4832CCD96AE280F4562E0DC166B64…

🔐 DNSSEC#

86ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2411422002
Primary NS (MNAME)dave.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-04 12:46:33
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2012-05-15
Expires2027-05-31 (215d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
49ms
A
46ms
MX
58ms
AAAA
36ms
TXT
179ms
CAA
57ms
HTTPS
32ms
TLSA
69ms
SOA
0ms
MTA-STS
66ms
DNSSEC
86ms
SRV
80ms
Total
991ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-23 18:59:05 692ms 2 NS 2 A 1 MX 🔒 Secure
2026-10-15 09:32:25 830ms 2 NS 2 A 1 MX 🔒 Secure
2026-10-14 09:21:02 941ms 2 NS 2 A 1 MX 🔒 Secure
2026-10-04 12:39:21 1531ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-23 11:04:14 929ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-16 10:04:35 636ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-12 13:29:44 777ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-01 15:32:44 3160ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-15 14:08:57 1062ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-06 14:53:14 shown 991ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-05 20:40:07 1176ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-03 14:04:04 11342ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-20 04:07:58 2617ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-17 22:38:51 1052ms 2 NS 2 A 1 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone