headzup.dk
Last scanned: 2026-08-27 10:04:45  ·  673ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   40ms
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
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S
🌍 A Records1 records   51ms
IPTTLPTRASNISP / OrgCIDRCountryCity
23.227.38.65 2326s myshopify.com AS13335 Cloudflare, Inc. 23.227.38.0/23 🇨🇦 Canada Ottawa
📧 MX Records1 records   49ms
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
🔷 Autodiscover23.227.38.65
🔶 Autoconfigshops.myshopify.com → 23.227.38.74
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   65ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 maildiscover.simply.com
📝 TXT Records5 records   202ms
TXT Record
ce2880c57d9a9470f7c53a2aea7b3e89
google-site-verification=8IfMXjco31X_yxp6gk6ZJY-SaNo10Av1hyTTNZiccbk
google-site-verification=dZzRO5v1X5JzaS-tj0SPG9dfu8QVBEgpK84BGJ04SH0
klaviyo-site-verification=RFpDZM
v=spf1 include:spf.simply.com -all
✉️ SPF
PolicyRecord (headzup.dk)
-all (hard fail) v=spf1 include:spf.simply.com -all
📨 DMARC
PolicyRecord (_dmarc.headzup.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
🔗 TLSA / DANE2 records   53ms
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…
🔐 DNSSEC96ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026050703
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
40ms
A
51ms
MX
49ms
AAAA
55ms
TXT
202ms
CAA
56ms
HTTPS
36ms
TLSA
53ms
SOA
0ms
MTA-STS
62ms
DNSSEC
96ms
SRV
65ms
Total
673ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 10:04:45 673ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-22 10:19:09 818ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-17 11:05:00 1013ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-17 10:54:33 666ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-17 10:53:59 1038ms 4 NS 1 A 1 MX 🔒 Secure View
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