roskildetandteknik.dk

Records from scan: 2026-10-23 18:59:05  ·  692ms total  ·  last checked 2026-10-26 12:36 (unchanged)
⬇ 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 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   28ms
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   28ms
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   29ms
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   30ms
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   26ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.30.226,172.67.173.229 ech=AEX+DQBB9AAgACD7LTz1nPuQoBFdLEvICiQQlKfbuWSsi1gx/NugqrZBCgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:1ee2,2606:4700:3031::ac43:ade5

🔌 SRV Records#

2 records   65ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 autoconfig.flexmail.dk
_imaps._tcp 0 0 993 mail.flexmail.dk

📝 TXT Records#

2 records   144ms
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#

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   51ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.flexmail.dk DANE-EE · SPKI · SHA-256 75F4832CCD96AE280F4562E0DC166B64…

🔐 DNSSEC#

96ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

24ms
FieldValue
Serial2417462400
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
28ms
A
28ms
MX
29ms
AAAA
30ms
TXT
144ms
CAA
30ms
HTTPS
26ms
TLSA
51ms
SOA
24ms
MTA-STS
40ms
DNSSEC
96ms
SRV
65ms
Total
692ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-23 18:59:05 shown 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 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