sierbach.dk

📜 Historical scan 2026-08-27 09:32:49  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sierbach.dk is a .dk domain served by 3 nameservers (ns1.ecomdata.de, ns2.ecomdata.de, ns3.ecomdata.de). It was registered on 19 February 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.45.146.251 is hosted by ecomDATA GmbH (AS211582) in Germany. Mail is handled by mail.sierbach.dk. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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   57ms
NameserverIP addressesPTRASN / ISP
ns1.ecomdata.de 2a10:b040:1::10
80.243.227.47		 ns1.ecomdata.de
ns1.ecomdata.de		 AS211582 ecomDATA GmbH
AS211582 ecomDATA GmbH
ns2.ecomdata.de 185.214.189.1
2a10:b040:2::10		 ns2.ecomdata.de
ns2.ecomdata.de		 AS211582 ecomDATA GmbH
AS211582 ecomDATA GmbH
ns3.ecomdata.de 2a05:d014:c05:4500:83e6:7723:5290:365b
35.158.5.252		 ns3.ecomdata.de
ns3.ecomdata.de		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.

🌍 A Records#

1 records   60ms
IPTTLPTRASNISP / OrgCIDRCountryCity
5.45.146.251 300s mpweb0005.ecomdata.de AS211582 ecomDATA GmbH 5.45.144.0/22 🇩🇪 Germany Nuremberg

📧 MX Records#

1 records   59ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.sierbach.dk 2a10:b040:3::2:151
5.45.146.251		 mpweb0005.ecomdata.de
mpweb0005.ecomdata.de		 AS211582 ecomDATA GmbH
AS211582 ecomDATA GmbH

🔷 AAAA Records (IPv6)#

1 records   44ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a10:b040:3::2:151 300s mpweb0005.ecomdata.de AS211582 ecomDATA GmbH 2a10:b040:2:0:0:0:0:0/47 🇩🇪 Germany Nuremberg

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   314ms
TXT Record
v=spf1 a mx ip4:5.45.146.251 ip6:2a10:b040:3:0:0:0:2:151 ~all

✉️ SPF#

PolicyRecord (sierbach.dk)
~all (soft fail) v=spf1 a mx ip4:5.45.146.251 ip6:2a10:b040:3:0:0:0:2:151 ~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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 01:48:07
www5.45.146.251 2a10:b040:3::2:151 (AS211582) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

120ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2026020500
Primary NS (MNAME)ns1.ecomdata.de
Responsible (RNAME)hostmaster@sierbach.dk
Refresh3600s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)86400s

📋 Registration#

WHOIS fetched 2026-10-13 15:11:41
FieldValue
RegistrarInterNetX GmbH
Registered2025-02-19
Expires2027-02-18 (123d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet
📋 WHOIS#

⏱️ Lookup Timing#

NS
57ms
A
60ms
MX
59ms
AAAA
44ms
TXT
314ms
CAA
55ms
HTTPS
71ms
TLSA
254ms
SOA
0ms
MTA-STS
112ms
DNSSEC
120ms
SRV
116ms
Total
2370ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-26 04:11:47 9988ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-27 09:32:49 shown 2370ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-28 20:49:23 835ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-20 19:15:22 1996ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-17 22:57:59 7000ms 3 NS 1 A 1 MX 🔓 Insecure
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