horizen.dk
Last scanned: 2026-06-25 13:07:30  ·  834ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   44ms
NameserverIP addressesPTRASN / ISP
ns1.vercel-dns.com 198.51.44.13
2620:4d:4000:6259:7:13:0:1		 dns1.p13.nsone.net
—		 AS62597 NSONE Inc
AS62597 NSONE Inc
ns2.vercel-dns.com 198.51.45.13
2a00:edc0:6259:7:13::2		 dns2.p13.nsone.net
—		 AS62597 NSONE Inc
AS62597 NSONE Inc
🌍 A Records1 records   49ms
IPTTLPTRASNISP / OrgCIDRCountryCity
76.76.21.21 600s — AS16509 Amazon.com, Inc. 76.76.21.0/24 🇺🇸 United States Walnut
📧 MX Records1 records   43ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover216.150.1.193
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   108ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 0 443 maildiscover.simply.com
📝 TXT Records1 records   384ms
TXT Record
v=spf1 include:spf.simply.com -all
✉️ SPF
PolicyRecord (horizen.dk)
-all (hard fail) v=spf1 include:spf.simply.com -all
📨 DMARC
PolicyRecord (_dmarc.horizen.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 Records3 records   98ms
FlagsTagValue
0 issue letsencrypt.org
0 issue pki.goog
0 issue sectigo.com
🔗 TLSA / DANE2 records   62ms
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🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA61ms
FieldValue
Serial1778243416
Primary NS (MNAME)ns1.vercel-dns.com
Responsible (RNAME)hostmaster@nsone.net
Refresh43200s
Retry7200s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
44ms
A
49ms
MX
43ms
AAAA
134ms
TXT
384ms
CAA
98ms
HTTPS
68ms
TLSA
62ms
SOA
61ms
MTA-STS
63ms
DNSSEC
103ms
SRV
108ms
Total
834ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-25 13:07:30 834ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-25 09:14:40 973ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-23 04:59:05 1168ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-19 18:06:21 744ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-19 04:20:47 3497ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 13:29:10 286ms 0 NS 0 A 0 MX ❓ Unknown View
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