c-3.dk
Last scanned: 2026-08-28 10:18:51  ·  948ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   74ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com 2a02:2339:1:15c::4562:4562
91.197.248.78		 ns1.simply.com
ns1.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.simply.com 185.25.141.15
2a02:2339:4006:101::4562:4562		 ns2.simply.com
ns2.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns3.simply.com 91.197.248.79 ns3.simply.com AS48854 team.blue Denmark A/S
🌍 A Records1 records   57ms
IPTTLPTRASNISP / OrgCIDRCountryCity
23.227.38.65 3600s myshopify.com AS13335 Cloudflare, Inc. 23.227.38.0/23 🇨🇦 Canada Ottawa
📧 MX Records1 records   44ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222
🔷 AAAA Records (IPv6)1 records   62ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2620:127:f00f:5:: 3600s — AS13335 Cloudflare, Inc. 2620:127:f00c:0:0:0:0:0/46 🇨🇦 Canada —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   81ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 maildiscover.simply.com
📝 TXT Records2 records   145ms
TXT Record
atlassian-domain-verification=oFu6ZjEZaJpsm32EdMq/pQhE8HsXvxevDYaCSYE5AvB8Ciwk75sMEh5Qq4ZG2TAe
google-site-verification=6wy-jmd451WcPCUMWUFcR99Vd7u-uP_6RKha4e1TI7g
✉️ SPF
✗ No SPF record — mail spoofing not restricted
📨 DMARC
PolicyRecord (_dmarc.c-3.dk)
p=reject v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;
📬 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
🔗 TLSA / DANE2 records   166ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
🔐 DNSSEC103ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026031602
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
74ms
A
57ms
MX
44ms
AAAA
62ms
TXT
145ms
CAA
49ms
HTTPS
67ms
TLSA
166ms
SOA
0ms
MTA-STS
75ms
DNSSEC
103ms
SRV
81ms
Total
948ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 10:18:51 948ms 3 NS 1 A 1 MX 🔒 Secure View
2026-08-26 13:54:54 964ms 3 NS 1 A 1 MX 🔒 Secure View
2026-07-02 11:58:37 685ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-26 02:23:39 719ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-25 03:33:00 500ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-24 01:40:13 1171ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-22 23:36:00 1052ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-16 18:49:59 380ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-16 18:40:53 531ms 3 NS 1 A 1 MX 🔒 Secure View
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