tref.dk

📜 Historical scan 2026-08-06 15:16:48  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tref.dk is a .dk domain served by 2 nameservers (lisa.ns.cloudflare.com, max.ns.cloudflare.com). It was registered on 19 July 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.69.103 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no 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   83ms
NameserverIP addressesPTRASN / ISP
lisa.ns.cloudflare.com 108.162.192.131
172.64.32.131
173.245.58.131
2606:4700:50::adf5:3a83
2803:f800:50::6ca2:c083
2a06:98c1:50::ac40:2083		 lisa.ns.cloudflare.com
lisa.ns.cloudflare.com
lisa.ns.cloudflare.com
lisa.ns.cloudflare.com
lisa.ns.cloudflare.com
lisa.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
max.ns.cloudflare.com 108.162.193.132
172.64.33.132
173.245.59.132
2606:4700:58::adf5:3b84
2803:f800:50::6ca2:c184
2a06:98c1:50::ac40:2184		 max.ns.cloudflare.com
max.ns.cloudflare.com
max.ns.cloudflare.com
max.ns.cloudflare.com
max.ns.cloudflare.com
max.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   111ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.69.103 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.207.106 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

📧
No MX records found

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovertref.dk → 185.10.10.80
🔶 Autoconfigtref.dk → 185.10.10.80

🔷 AAAA Records (IPv6)#

2 records   87ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3030::ac43:cf6a 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3034::6815:4567 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   114ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.69.103,172.67.207.106 ech=AEX+DQBBpgAgACBtwVPz7Vu4Fr9pXedLR2JU9u5UnFNnLkMucPT3drpQaAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cf6a,2606:4700:3034::6815:4567

📝 TXT Records#

📝
No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-11 01:29:25
www185.10.10.80 2001:67c:3c0:12::53 (AS51468) (address records, no CNAME)
www vs bare domainDifferent networks (all like this)
WildcardYes: any name under the zone resolves

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.tref.dk tref.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

141ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2411049642
Primary NS (MNAME)lisa.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-20 15:28:28
FieldValue
RegistrarSimply.com A/S
Registered2011-07-19
Expires2027-07-31 (283d)

🔗 Same registrant#

43 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
3-f.dkSimply.com A/S
3f-a.dkSimply.com A/S
3f-design.dkSimply.com A/S
3f.dkSimply.com A/S
3fa.dkSimply.com A/S
3fi.dkSimply.com A/S
3findustri.dkSimply.com A/S
3finternational.dkSimply.com A/S
3fitst.dkSimply.com A/S
3frus.dkSimply.com A/S
3ftransport.dkCURANET A/S
3ftst.dkSimply.com A/S
3fudv.dkSimply.com A/S
3fudvtst.dkSimply.com A/S
70300300.dkSimply.com A/S
blivijob.dkSimply.com A/S
dagbladet3f.dkSimply.com A/S
danskemodel.dkSimply.com A/S
faellesforbundet.dkSimply.com A/S
fagbaldet3f.dkSimply.com A/S
fagbladet.dkSimply.com A/S
fagforeningstjek.dkSimply.com A/S
fagligtfaellesforbund.dkSimply.com A/S
fairpensionsalder.dkSimply.com A/S
fff.dkSimply.com A/S
fællesskab.dkSimply.com A/S
kad.dkSimply.com A/S
landsklubber.dkSimply.com A/S
langsoehus.dkSimply.com A/S
lærlinge.dkSimply.com A/S
nejtilsocialdumping.dkSimply.com A/S
ok-rent.dkSimply.com A/S
overenskomster.dkSimply.com A/S
r-u-s.dkSimply.com A/S
sammenomok20.dkSimply.com A/S
skaevt.dkSimply.com A/S
skraldemand.dkSimply.com A/S
skævt.dkSimply.com A/S
tib.dkSimply.com A/S
trefu.dkSimply.com A/S
ungi3f.dkSimply.com A/S
vaerdigreform.dkSimply.com A/S
værdigreform.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
83ms
A
111ms
MX
78ms
AAAA
87ms
TXT
276ms
CAA
137ms
HTTPS
114ms
TLSA
795ms
SOA
0ms
MTA-STS
158ms
DNSSEC
141ms
SRV
147ms
Total
1685ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-29 19:20:13 451ms 2 NS 2 A 0 MX 🔓 Insecure
2026-09-27 05:47:41 9444ms 2 NS 2 A 0 MX 🔓 Insecure
2026-09-19 07:51:16 1170ms 2 NS 2 A 0 MX 🔓 Insecure
2026-09-13 22:45:09 1521ms 2 NS 2 A 0 MX 🔓 Insecure
2026-08-28 08:43:26 735ms 2 NS 2 A 0 MX 🔓 Insecure
2026-08-06 15:16:48 shown 1685ms 2 NS 2 A 0 MX 🔓 Insecure
2026-07-16 19:05:46 8614ms 2 NS 2 A 0 MX 🔓 Insecure
2026-06-27 15:45:55 763ms 2 NS 2 A 0 MX 🔓 Insecure
2026-06-17 11:45:47 1047ms 2 NS 2 A 0 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone