sys.co.tz - robtex.com
sys.co.tz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 75.119.144.37🇩🇪 CONTABO75.119.128.0/19 | ||||||
| PTR | vmi2951579.contaboserver.net | ||||||
| NS | ns1.contabo.net ⭐ | ||||||
| A | 2a02:c207:ff00:1200::1🇩🇪 CONTABO2a02:c207::/32 | ||||||
| A | 5.180.150.13🇺🇸 CONTABO5.180.150.0/24 | ||||||
| PTR | ns1.contabo.net | ||||||
| NS | ns2.contabo.net | ||||||
| A | 2a02:c202:5028:1200::1🇩🇪 CONTABO2a02:c202::/32 | ||||||
| A | 195.179.224.10🇩🇪 CONTABO195.179.224.0/21 | ||||||
| PTR | ns2.contabo.net | ||||||
| NS | ns3.contabo.net ⚠️ Not in parent delegation | ||||||
| A | 2605:a140:5028:1200::1🇺🇸 CONTABO-USA2605:a140::/32 710 N Tucker Blvd. STE 400A St. Louis MO 63101 United States | ||||||
| A | 209.126.15.15🇺🇸 CONTABO-USA209.126.0.0/20 710 N Tucker Blvd. STE 400A St. Louis MO 63101 United States | ||||||
| PTR | ns3.contabo.net | ||||||
| MX | mail.sys.co.tz ⭐ | ||||||
| A | 75.119.144.37🇩🇪 CONTABO75.119.128.0/19 | ||||||
| PTR | vmi2951579.contaboserver.net | ||||||
| SOA | ns1.contabo.nethostmaster@contabo.de serial=1781493793 | ||||||
co.tz
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns2.tznic.or.tz ⭐ ⚠️ Not in parent delegation | ||||||
| NS | fork.sth.dnsnode.net ⚠️ Not in parent delegation | ||||||
| NS | ns.anycast.co.tz ⚠️ Not in parent delegation | ||||||
| NS | rip.psg.com ⚠️ Not in parent delegation | ||||||
| NS | tz-e.ns.nic.cz ⚠️ Not in parent delegation | ||||||
| SOA | ns2.tznic.or.tzrajisi@tcra.go.tz serial=1781492403 | ||||||
Subdomains
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.contabo.net2026-05-28 → 2026-06-15 · 2 obs
● 2026-06-15 03:23:12
●NSns2.contabo.net2026-05-28 → 2026-06-15 · 2 obs
● 2026-06-15 03:23:12
●NSns3.contabo.net2026-05-28 → 2026-06-15 · 2 obs
● 2026-06-15 03:23:12
●MXmail.sys.co.tz2026-05-28 → 2026-06-15 · 2 obs
● 2026-06-15 03:23:12
●A75.119.144.372026-05-28 → 2026-06-15 · 2 obs
● 2026-06-15 03:23:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tz | ns.anycast.co.tz, tz-e.ns.nic.cz, rip.psg.com, ns2.tznic.or.tz... | 10 records |
| sys.co.tz | ns1.contabo.net, ns2.contabo.net | - |
✅ Authoritative Response
Server:195.179.224.10
NS records: ns1.contabo.net, ns2.contabo.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sys.co.tz (unsigned zone)
⏱️ Timing
Total: 832ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 75.119.144.37 |
| NS | 3 | ns1.contabo.net, ns2.contabo.net... |
| MX | 1 | mail.sys.co.tz (pri: 10) |
| SOA | 1 | ns1.contabo.net hostmaster.contabo.de |
📌 Glue Records Collected
Total: 10
In-bailiwick: 4 (ns.anycast.co.tz, ns2.tznic.or.tz, ns.anycast.co.tz...)
Out-of-bailiwick: 6 (tz-e.ns.nic.cz, fork.sth.dnsnode.net, rip.psg.com...)
Analysis
Hierarchy
mail.sys.co.tz and prizeen.sys.co.tz are both subdomains of sys.co.tz.
IP Addresses
sys.co.tz resolves to one IP address: 75.119.144.37.
sys.co.tz shares its IP numbers with other host names like prizeen.sys.co.tz, vmi2951579.contaboserver.net and mail.sys.co.tz.
Name Servers
sys.co.tz carries NS records delegating to ns1.contabo.net, ns2.contabo.net and ns3.contabo.net.
sys.co.tz has at least partial name server overlap with other domains, such as itempire.biz, 126.217.185.in-addr.arpa, sellonsell.com and two others.
ns1.contabo.net, ns2.contabo.net and ns3.contabo.net are three hostnames that each resolve to a pair of IP addresses: ns1.contabo.net to 5.180.150.13 and 2a02:c207:ff00:1200::1, ns2.contabo.net to 195.179.224.10 and 2a02:c202:5028:1200::1, and ns3.contabo.net to 209.126.15.15 and 2605:a140:5028:1200::1.
Mail Servers
Mail for sys.co.tz is handled by a single mail server, mail.sys.co.tz.
mail.sys.co.tz carries a single IP number, which is 75.119.144.37.