certo.at - robtex.com
certo.at
| DNSSEC | ⚠️ Not signed | ||||||
| A | 213.145.228.16🇦🇹 DOMAINTECHNIK213.145.224.0/19 DomainTechnik | ||||||
| PTR | host9.ssl-secured.eu | ||||||
| NS | ns1.domaintechnik.at ⭐ | ||||||
| A | 213.145.228.70🇦🇹 DOMAINTECHNIK213.145.224.0/19 DomainTechnik | ||||||
| PTR | ns1.domaintechnik.at | ||||||
| NS | ns2.domaintechnik.at | ||||||
| A | 213.145.228.140🇦🇹 DOMAINTECHNIK213.145.224.0/19 DomainTechnik | ||||||
| PTR | ns2.domaintechnik.at | ||||||
| NS | ns3.domaintechnik.at | ||||||
| A | 213.145.232.70🇦🇹 DOMAINTECHNIK213.145.224.0/19 DomainTechnik | ||||||
| PTR | ns3.domaintechnik.at | ||||||
| NS | ns4.domaintechnik.at | ||||||
| A | 83.151.27.254🇩🇪 VOLLMAR-AS83.151.16.0/20 VOLLMARNET-PI-ROUTE | ||||||
| PTR | ns4.domaintechnik.at | ||||||
| MX | mail.certo.at ⭐ | ||||||
| A | 213.145.228.16🇦🇹 DOMAINTECHNIK213.145.224.0/19 DomainTechnik | ||||||
| PTR | host9.ssl-secured.eu | ||||||
| SOA | ns1.domaintechnik.atroot@domaintechnik.at 2025-09-09 #1 | ||||||
at
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns.nic.at ⭐ | ||||||
| NS | d.ns.at | ||||||
| NS | j.ns.at | ||||||
| NS | n.ns.at | ||||||
| NS | ns1.univie.ac.at | ||||||
| NS | ns2.univie.ac.at | ||||||
| NS | r.ns.at | ||||||
| NS | u.ns.at | ||||||
| SOA | dns.nic.atdomain-admin@univie.ac.at serial=1785063602 | ||||||
Subdomains
mail.certo.at |
Same first word
Similar names
DNS History
14 records (6 active, 8 former)
○NSns1.alidns.com2016-09-17 → 2017-04-06 · 5 obs
● 2016-09-17 00:50:18
● 2017-04-06 16:44:20
○ 2026-07-17 05:00:00
○ 2026-07-26 12:10:06
●NSns1.domaintechnik.at2026-07-17 → 2026-07-26 · 3 obs
● 2026-07-17 05:00:00
● 2026-07-26 12:10:06
○NSns1.hans.hosteurope.de2015-06-27 → 2016-01-20 · 4 obs
● 2016-01-20 10:07:16
○ 2016-04-10 10:42:16
○ 2026-07-26 12:10:06
○NSns2.alidns.com2016-09-17 → 2017-04-06 · 5 obs
● 2016-09-17 00:50:18
● 2017-04-06 16:44:20
○ 2026-07-17 05:00:00
○ 2026-07-26 12:10:06
●NSns2.domaintechnik.at2026-07-17 → 2026-07-26 · 3 obs
● 2026-07-17 05:00:00
● 2026-07-26 12:10:06
○NSns2.hans.hosteurope.de2015-06-27 → 2016-01-20 · 4 obs
● 2016-01-20 10:07:16
○ 2016-04-10 10:42:16
○ 2026-07-26 12:10:06
●NSns3.domaintechnik.at2026-07-17 → 2026-07-26 · 3 obs
● 2026-07-17 05:00:00
● 2026-07-26 12:10:06
●NSns4.domaintechnik.at2026-07-17 → 2026-07-26 · 3 obs
● 2026-07-17 05:00:00
● 2026-07-26 12:10:06
●MXmail.certo.at2026-07-17 → 2026-07-26 · 3 obs
● 2026-07-17 05:00:00
● 2026-07-26 12:10:06
○MXmx0.certo.at2015-06-27 → 2016-01-20 · 4 obs
● 2016-01-20 10:07:16
○ 2016-04-10 10:42:16
○ 2026-07-26 12:10:06
●A213.145.228.162026-07-17 → 2026-07-26 · 3 obs
● 2026-07-17 05:00:00
● 2026-07-26 12:10:06
○A2a01:488:42:1000:50ed:84cf:25:e6122015-06-27 → 2016-01-20 · 4 obs
● 2016-01-20 10:07:16
○ 2016-04-10 10:42:16
○ 2026-07-26 12:10:06
○A80.237.132.2072015-06-27 → 2016-01-20 · 4 obs
● 2016-01-20 10:07:16
○ 2016-04-10 10:42:16
○ 2026-07-26 12:10:06
○A94.242.243.1012016-09-17 → 2017-04-06 · 5 obs
● 2016-09-17 00:50:18
● 2017-04-06 16:44:20
○ 2026-07-17 05:00:00
○ 2026-07-26 12:10:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| at | d.ns.at, j.ns.at, n.ns.at, r.ns.at... | - |
| certo.at | ns1.domaintechnik.at, ns2.domaintechnik.at, ns3.domaintechnik.at, ns4.domaintechnik.at | 4 records |
✅ Authoritative Response
Server:213.145.228.70
NS records: ns1.domaintechnik.at, ns2.domaintechnik.at, ns3.domaintechnik.at, ns4.domaintechnik.at
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certo.at (unsigned zone)
⏱️ Timing
Total: 941ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.145.228.16 |
| NS | 4 | ns3.domaintechnik.at, ns1.domaintechnik.at... |
| MX | 1 | mail.certo.at (pri: 10) |
| SOA | 1 | ns1.domaintechnik.at root.domaintechnik. |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.domaintechnik.at, ns2.domaintechnik.at, ns3.domaintechnik.at...)
Analysis
Hierarchy
mail.certo.at is delegated beneath certo.at.
IP Addresses
certo.at points to a single IP number: 213.145.228.16.
Additional host names — mail.thermokey.at, almresorts.at, mail.pension-platzhaus.at and two others — share IP numbers with certo.at.
Name Servers
certo.at has four authoritative name servers: ns1.domaintechnik.at, ns2.domaintechnik.at, ns3.domaintechnik.at and ns4.domaintechnik.at.
There is at least partial name server overlap between certo.at and other domains — isocell.bg, actionandfun.com, supermusic.at and two more among them.
ns1.domaintechnik.at, ns2.domaintechnik.at, ns3.domaintechnik.at and ns4.domaintechnik.at each resolve to one IP address: ns1.domaintechnik.at resolves to 213.145.228.70, ns2.domaintechnik.at resolves to 213.145.228.140, ns3.domaintechnik.at resolves to 213.145.232.70 and ns4.domaintechnik.at resolves to 83.151.27.254.
Mail Servers
certo.at has one mail server: mail.certo.at.
mail.certo.at points to one IP number — 213.145.228.16.