20koster.dk
Last scanned: 2026-08-16 18:57:43  ·  1095ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   8ms
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   2ms
IPTTLPTRASNISP / OrgCIDRCountryCity
23.227.38.65 3600s myshopify.com AS13335 Cloudflare, Inc. 23.227.38.0/23 🇨🇦 Canada Ottawa
📧 MX Records1 records   2ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
🔷 AAAA Records (IPv6)1 records   9ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2620:127:f00f:5:: 3600s — AS13335 Cloudflare, Inc. 2620:127:f00c::/46 🇨🇦 Canada —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   160ms
TXT Record
v=spf1 include:shops.shopify.com include:spf.simply.com -all
✉️ SPF
PolicyRecord (20koster.dk)
-all (hard fail) v=spf1 include:shops.shopify.com include:spf.simply.com -all
📨 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
🔗 TLSA / DANE2 records   63ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…
🔐 DNSSEC301ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
Key typeAlgorithmPublic key
KSK ECDSA P-256/SHA-256 VUqxIYMaS0LNKdRQvxRhmriZN1EzGQMDVlVINv9h…
🏷️ SOA25ms
FieldValue
Serial2025042300
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
8ms
A
2ms
MX
2ms
AAAA
9ms
TXT
160ms
CAA
2ms
HTTPS
52ms
TLSA
63ms
SOA
25ms
MTA-STS
4ms
DNSSEC
301ms
SRV
0ms
Total
1095ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-16 18:57:43 1095ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-24 21:05:46 2364ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-23 20:45:38 994ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-16 13:14:53 10139ms 3 NS 1 A 1 MX 🔒 Secure View
2026-06-16 13:12:44 560ms 3 NS 1 A 1 MX 🔒 Secure View
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