krystal.dk

📜 Historical scan 2026-10-16 07:45:16  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

krystal.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 23 December 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.223.235.80 is hosted by DLX A/S (AS47527) in Denmark. Mail is handled by mx1.spamfri.dk, mx2.spamfri.dk and 1 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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#

3 records   36ms
NameserverIP addressesPTRASN / ISP
ns1.e-studio.dk 195.242.131.5
2001:67c:564:fffc::11		 ns1.e-studio.dk
ns1.e-studio.dk		 AS62121 Christian Ebsen ApS
AS62121 Christian Ebsen ApS
ns2.e-studio.dk 2a00:1b18:2:3::2
62.69.152.34		 ns2.e-studio.dk
ns2.e-studio.dk		 AS47527 DLX A/S
AS47527 DLX A/S
ns3.e-studio.dk 193.200.90.183
2001:67c:564:fffc::13		 ns3.e-studio.dk
ns3.e-studio.dk		 AS62121 Christian Ebsen ApS
AS62121 Christian Ebsen ApS

🌍 A Records#

1 records   33ms
IPTTLPTRASNISP / OrgCIDRCountryCity
91.223.235.80 14400s imali.pil.dk AS47527 DLX A/S 91.223.235.0/24 🇩🇰 Denmark —

📧 MX Records#

3 records   48ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx1.spamfri.dk 195.242.131.16
2001:67c:564:fffd::1001		 mx1.spamfri.dk
mx1.spamfri.dk		 AS62121 Christian Ebsen ApS
AS62121 Christian Ebsen ApS
20 3600s mx2.spamfri.dk 193.200.91.109
2001:67c:564:fffd::2001		 mx2.spamfri.dk
mx2.spamfri.dk		 AS62121 Christian Ebsen ApS
AS62121 Christian Ebsen ApS
30 3600s mx3.spamfri.dk 2a00:1b18:2:3:fe::2
62.69.152.43		 mx3.spamfri.dk
mx3.spamfri.dk		 AS47527 DLX A/S
AS47527 DLX A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover195.242.130.94
🔶 Autoconfig195.242.130.94

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records   47ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 cpanelemaildiscovery.cpanel.net

📝 TXT Records#

1 records   118ms
TXT Record
v=spf1 include:_spf.e-studio.dk include:send.heysender.com -all

✉️ SPF#

PolicyRecord (krystal.dk)
-all (hard fail) v=spf1 include:_spf.e-studio.dk include:send.heysender.com -all

📨 DMARC#

PolicyRecord (_dmarc.krystal.dk)
p=none (monitor only) v=DMARC1; p=none

📬 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 2026-10-20 11:37:46
www CNAMEkrystal.dk (all on krystal.dk)
www vs bare domainSame network
krystal.dk: 91.223.235.80 (AS47527)
www.krystal.dk: 91.223.235.80 (AS47527)
WildcardNo
Denial of existenceNSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

✍️ 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: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.krystal.dk dIr59Dz6RPDcNf6LHK21fy_XtawWqEZjZFIDJ0zaLmE

🔗 TLSA / DANE#

3 records   51ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.spamfri.dk DANE-EE · SPKI · SHA-256 884451547A03D0AC2F628D943839BAA6…
SMTP _25._tcp.mx2.spamfri.dk DANE-EE · SPKI · SHA-256 6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk DANE-EE · SPKI · SHA-256 BBFB0694919290E5BC9D6E2C6F47D846…

🔐 DNSSEC#

60ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

36ms
FieldValue
Serial2026101601
Primary NS (MNAME)ns1.e-studio.dk
Responsible (RNAME)hostmaster@mailrelay.e-studio.dk
Refresh3600s
Retry1800s
Expire1209600s
Minimum (neg-cache TTL)86400s

📋 Registration#

WHOIS fetched 2026-10-19 09:47:43
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2019-12-23
Expires2026-12-31 (70d)

🔗 Same registrant#

3 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
karolinegronnehoj.dkSimply.com A/S
saltlampen.dkPunktum dk A/S (direct)
tarotshop.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
36ms
A
33ms
MX
48ms
AAAA
32ms
TXT
118ms
CAA
44ms
HTTPS
43ms
TLSA
51ms
SOA
36ms
MTA-STS
53ms
DNSSEC
60ms
SRV
47ms
Total
456ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-20 11:37:46 426ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-19 09:19:17 705ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-18 08:23:40 561ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-17 08:15:10 2779ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-16 07:45:16 shown 456ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-15 06:48:21 786ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-14 04:39:01 1584ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-13 04:04:05 860ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-12 02:21:32 570ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-11 01:25:57 793ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-10 00:29:47 715ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-08 21:22:21 840ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-07 21:16:45 2748ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-06 21:13:32 375ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-05 17:05:11 2153ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-04 17:00:01 976ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-03 16:54:13 1102ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-02 16:50:02 792ms 3 NS 1 A 3 MX 🔒 Secure
2026-10-01 16:49:26 1255ms 3 NS 1 A 3 MX 🔒 Secure
2026-09-30 16:46:27 596ms 3 NS 1 A 3 MX 🔒 Secure
2026-09-30 03:50:25 566ms 3 NS 1 A 3 MX 🔒 Secure
2026-09-29 15:44:10 1976ms 3 NS 1 A 3 MX 🔒 Secure
2026-09-28 15:36:14 892ms 3 NS 1 A 3 MX 🔒 Secure
2026-09-27 15:24:12 847ms 3 NS 1 A 3 MX 🔒 Secure
2026-09-26 15:16:58 758ms 3 NS 1 A 3 MX 🔒 Secure
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