a4con.com - robtex.com
a4con.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Same first word
Similar names
DNS History
8 records (8 active, 0 former)
●NSns-de.1and1-dns.biz2018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●NSns-de.1and1-dns.com2018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●NSns-de.1and1-dns.de2018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●NSns-de.1and1-dns.org2018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●MXmx00.kundenserver.de2018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●MXmx01.kundenserver.de2018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●A136.243.166.142018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
●A2a01:4f8:d0a:637b::22018-11-04 → 2026-03-23 · 2 obs
● 2026-03-23 17:36:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| a4con.com | ns-de.1and1-dns.de, ns-de.1and1-dns.biz, ns-de.1and1-dns.com, ns-de.1and1-dns.org | 2 records |
✅ Authoritative Response
Server:217.160.80.1
NS records: ns-de.1and1-dns.de, ns-de.1and1-dns.biz, ns-de.1and1-dns.com, ns-de.1and1-dns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for a4con.com (unsigned zone)
⏱️ Timing
Total: 422ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 136.243.166.14 |
| AAAA | 1 | 2a01:4f8:d0a:637b::2 |
| NS | 4 | ns-de.1and1-dns.com, ns-de.1and1-dns.biz... |
| MX | 2 | mx00.kundenserver.de (pri: 10), mx01.kundenserver.de (pri: 11) |
| SOA | 1 | ns-de.1and1-dns.de hostmaster.kundenserv |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-de.1and1-dns.com, ns-de.1and1-dns.com)
Analysis
IP Addresses
a4con.com points to two IPs: 2a01:4f8:d0a:637b::2 and 136.243.166.14.
Other host names, for instance dedi4882.your-server.de, a4kom.de, www.landomat.bayern, econ-referenten.de and currion.de share IP numbers with a4con.com.
Name Servers
a4con.com is delegated to four name servers: ns-de.1and1-dns.biz, ns-de.1and1-dns.com, ns-de.1and1-dns.de and ns-de.1and1-dns.org.
a4con.com at least partially shares name servers with other domains such as autoverkaufen.jetzt, hoteldiezeit.at, syst.media, blister.online and susann-oberacker.de.
Host names with two IP numbers:
ns-de.1and1-dns.biz points to 2001:8d8:fe:53:0:d9a0:5101:100 and 217.160.81.1
ns-de.1and1-dns.com points to 2001:8d8:fe:53:0:d9a0:5201:100 and 217.160.82.1
ns-de.1and1-dns.de points to 2001:8d8:fe:53:0:d9a0:5001:100 and 217.160.80.1
ns-de.1and1-dns.org points to 2001:8d8:fe:53:0:d9a0:5301:100 and 217.160.83.1
Mail Servers
Two mail servers handle a4con.com: mx00.kundenserver.de and mx01.kundenserver.de.
a4con.com shares the same mail server setup as other domains, including koehlers-krone.de, oldeboershuis.de, aclear.de, mailhost-old.ib-fdw.com and klassentreffen-pos-kleinmachnow.de.
a4con.com shares mail servers with other domains at least in part, for instance markusklaes.de, drestate.de, flaig-te.de, boehm-qualitaetsmanagement.de and vesterling.com.
Host names with a single IP address:
mx00.kundenserver.de points to 212.227.15.41
mx01.kundenserver.de points to 217.72.192.67