retzef.dk

📜 Historical scan 2026-09-12 19:51:59  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

retzef.dk is a .dk domain served by 2 nameservers (pearl.ns.cloudflare.com, sid.ns.cloudflare.com). It was registered on 11 July 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.26.77 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by gw.retzef.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   27ms
NameserverIP addressesPTRASN / ISP
pearl.ns.cloudflare.com 108.162.194.140
162.159.38.140
172.64.34.140
2606:4700:50::a29f:268c
2803:f800:50::6ca2:c28c
2a06:98c1:50::ac40:228c		 pearl.ns.cloudflare.com
pearl.ns.cloudflare.com
pearl.ns.cloudflare.com
pearl.ns.cloudflare.com
pearl.ns.cloudflare.com
pearl.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   49ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.26.77 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.135.160 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   49ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s gw.retzef.dk 136.144.183.154
2a01:7c8:aac7::1		 gw.swat.dk
gw.ams05.transip.net		 AS20857 Signet B.V.
AS20857 Signet B.V.

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovermail.retzef.dk → 95.170.85.79
🔶 Autoconfig104.21.26.77

🔷 AAAA Records (IPv6)#

2 records   42ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3035::6815:1a4d 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::ac43:87a0 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   43ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.26.77,172.67.135.160 ech=AEX+DQBB4AAgACAdyB9WUebkAk21m/J6r24lh1oGlK3T4SWUoZM9saWNNwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:1a4d,2606:4700:3037::ac43:87a0

📝 TXT Records#

1 records   172ms
TXT Record
v=spf1 include:spf.swat.dk -all

✉️ SPF#

PolicyRecord (retzef.dk)
-all (hard fail) v=spf1 include:spf.swat.dk -all

📨 DMARC#

PolicyRecord (_dmarc.retzef.dk)
p=reject v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@retzef.dk

📬 MTA-STS#

203ms
CheckResult
Status⚠️ Invalid
TXT record (_mta-sts)✓ Found
HTTPS policy✗ Missing / invalid
Policy ID2026082101
Policy MX—

📈 TLSRPT#

StatusReport address (rua)
✓ Enabled mailto:tlsrpt@retzef.dk

📜 CAA Records#

11 records   33ms
FlagsTagValue
0 issue comodoca.com
0 issue digicert.com; cansignhttpexchanges=yes
0 issue letsencrypt.org
0 issue pki.goog; cansignhttpexchanges=yes
0 issue ssl.com
0 issuewild ;
0 issuewild comodoca.com
0 issuewild digicert.com; cansignhttpexchanges=yes
0 issuewild letsencrypt.org
0 issuewild pki.goog; cansignhttpexchanges=yes
0 issuewild ssl.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-14 00:13:20
www104.21.26.77 172.67.135.160 2606:4700:3035::6815:1a4d 2606:4700:3037::ac43:87a0 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

✍️ DKIM keys#

1 found
SelectorCNAMEKey
default — 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: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

133ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2414356378
Primary NS (MNAME)pearl.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-13 19:00:25
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2019-07-11
Expires2027-07-31 (285d)

🔗 Same registrant#

10 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
highperformer.dkPunktum dk A/S (direct)
kravmagaacademy.dkPunktum dk A/S (direct)
kravmagaroskilde.dkPunktum dk A/S (direct)
mycrm.dkPunktum dk A/S (direct)
mywiki.dkPunktum dk A/S (direct)
parawings.dkPunktum dk A/S (direct)
pmox.dkPunktum dk A/S (direct)
pmoxadm.dkPunktum dk A/S (direct)
retzev.dkPunktum dk A/S (direct)
swat.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
27ms
A
49ms
MX
49ms
AAAA
42ms
TXT
172ms
CAA
33ms
HTTPS
43ms
TLSA
66ms
SOA
0ms
MTA-STS
203ms
DNSSEC
133ms
SRV
75ms
Total
1873ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-03 08:15:16 985ms 2 NS 2 A 1 MX 🔓 Insecure
2026-10-01 08:10:33 799ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-22 20:30:37 925ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-12 19:51:59 shown 1873ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-27 12:52:53 9819ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-18 17:13:55 3195ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-08 07:29:37 1033ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-11 11:13:41 1305ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-25 19:05:41 4015ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-17 11:36:22 1136ms 2 NS 2 A 1 MX 🔓 Insecure
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