3540.dk

📜 Historical scan 2026-06-16 12:46:57  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3540.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 22 April 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.20.205.54 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.com. 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   109ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com — — —
ns2.simply.com — — —
ns3.simply.com — — —

🌍 A Records#

1 records   103ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.20.205.54 — linux378.unoeuro.com AS48854 team.blue Denmark A/S 185.20.204.0/22 🇩🇰 Denmark —

📧 MX Records#

1 records   123ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   261ms
TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF#

PolicyRecord (3540.dk)
-all (hard fail) v=spf1 include:spf.simply.com -all

📨 DMARC#

PolicyRecord (_dmarc.3540.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 03:50:19
www185.20.205.54 (AS48854) (address records, no CNAME)
www vs bare domainSame network
3540.dk: 185.20.205.54 (AS48854)
www.3540.dk: 185.20.205.54 (AS48854)
WildcardYes: any name under the zone resolves
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

2 records   88ms
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…

🔐 DNSSEC#

220ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

96ms
FieldValue
Serial2025042300
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-03 00:54:48
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2002-04-22
Expires2027-06-30 (256d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
109ms
A
103ms
MX
123ms
AAAA
106ms
TXT
261ms
CAA
110ms
HTTPS
118ms
TLSA
88ms
SOA
96ms
MTA-STS
63ms
DNSSEC
220ms
SRV
0ms
Total
805ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-03 00:27:28 1409ms 3 NS 1 A 1 MX 🔒 Secure
2026-09-25 22:49:59 472ms 3 NS 1 A 1 MX 🔒 Secure
2026-09-18 20:15:16 507ms 3 NS 1 A 1 MX 🔒 Secure
2026-08-27 01:39:39 636ms 3 NS 1 A 1 MX 🔒 Secure
2026-07-02 00:38:56 540ms 3 NS 1 A 1 MX 🔒 Secure
2026-06-16 12:46:57 shown 805ms 3 NS 1 A 1 MX 🔒 Secure
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