stud.su - robtex.com
stud.su
| DNSSEC | ⚠️ Not signed | ||||||
| A | 158.220.103.241🇩🇪 CONTABO158.220.96.0/20 | ||||||
| PTR | vmi1513402.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 | ||||||
| A | 2605:a140:5028:1200::1🇺🇸 CONTABO-USA2605:a140::/32 Contabo Inc. 710 N Tucker Blvd. STE 420 St. Louis, MO 63101 US | ||||||
| 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.stud.su ⭐ | ||||||
| A | 158.220.103.241🇩🇪 CONTABO158.220.96.0/20 | ||||||
| PTR | vmi1513402.contaboserver.net | ||||||
| SOA | ns1.contabo.nethostmaster@contabo.de serial=1786866929 | ||||||
su
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.ripn.net ⭐ | ||||||
| NS | b.dns.ripn.net | ||||||
| NS | c.tld-servers.ru | ||||||
| NS | d.dns.ripn.net | ||||||
| NS | e.dns.ripn.net | ||||||
| NS | f.dns.ripn.net | ||||||
| SOA | a.dns.ripn.nethostmaster@ripn.net serial=650210227 | ||||||
⚠️ On DNS blocklist: spam-tlds
Subdomains
mail.stud.su |
Same first word
Similar names
DNS History
19 records (5 active, 14 former)
●NSns1.contabo.net2026-02-15 → 2026-08-16 · 3 obs
● 2026-02-15 11:47:16
● 2026-08-16 07:55:30
○NSns1.digitalocean.com2015-08-06 → 2015-12-05 · 4 obs
● 2015-12-05 15:55:24
○ 2016-02-29 09:30:50
○ 2026-08-16 07:55:30
○NSns1.eurobyte.ru2016-02-29 → 2019-09-04 · 5 obs
● 2016-02-29 09:30:50
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
●NSns2.contabo.net2026-02-15 → 2026-08-16 · 3 obs
● 2026-02-15 11:47:16
● 2026-08-16 07:55:30
○NSns2.digitalocean.com2015-08-06 → 2015-12-05 · 4 obs
● 2015-12-05 15:55:24
○ 2016-02-29 09:30:50
○ 2026-08-16 07:55:30
○NSns2.eurobyte.ru2016-02-29 → 2019-09-04 · 5 obs
● 2016-02-29 09:30:50
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
●NSns3.contabo.net2026-02-15 → 2026-08-16 · 3 obs
● 2026-02-15 11:47:16
● 2026-08-16 07:55:30
○NSns3.digitalocean.com2015-08-06 → 2015-12-05 · 4 obs
● 2015-12-05 15:55:24
○ 2016-02-29 09:30:50
○ 2026-08-16 07:55:30
○NSns3.eurobyte.ru2016-02-29 → 2019-09-04 · 5 obs
● 2016-02-29 09:30:50
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
○NSns4.eurobyte.ru2016-02-29 → 2019-09-04 · 5 obs
● 2016-02-29 09:30:50
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
○MXalt1.aspmx.l.google.com2016-02-29 → 2019-09-04 · 4 obs
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
○MXalt2.aspmx.l.google.com2016-02-29 → 2019-09-04 · 4 obs
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
○MXaspmx.l.google.com2016-02-29 → 2019-09-04 · 4 obs
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
○MXaspmx2.googlemail.com2016-02-29 → 2019-09-04 · 4 obs
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
○MXaspmx3.googlemail.com2016-02-29 → 2019-09-04 · 4 obs
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
●MXmail.stud.su2026-02-15 → 2026-08-16 · 3 obs
● 2026-02-15 11:47:16
● 2026-08-16 07:55:30
●A158.220.103.2412026-02-15 → 2026-08-16 · 3 obs
● 2026-02-15 11:47:16
● 2026-08-16 07:55:30
○A188.226.180.1152015-08-06 → 2015-12-05 · 4 obs
● 2015-12-05 15:55:24
○ 2016-02-29 09:30:50
○ 2026-08-16 07:55:30
○A46.30.42.2372016-02-29 → 2019-09-04 · 5 obs
● 2016-02-29 09:30:50
● 2019-09-04 06:42:20
○ 2026-02-15 11:47:16
○ 2026-08-16 07:55:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net... | 12 records |
| stud.su | ns1.contabo.net, ns2.contabo.net, ns3.contabo.net | - |
✅ Authoritative Response
Server:209.126.15.15
NS records: ns1.contabo.net, ns2.contabo.net, ns3.contabo.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for stud.su (unsigned zone)
⏱️ Timing
Total: 1000ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 158.220.103.241 |
| NS | 3 | ns3.contabo.net, ns2.contabo.net... |
| MX | 1 | mail.stud.su (pri: 10) |
| SOA | 1 | ns1.contabo.net hostmaster.contabo.de |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (a.dns.ripn.net, a.dns.ripn.net, b.dns.ripn.net...)
Analysis
Hierarchy
mail.stud.su is a subdomain of stud.su.
IP Addresses
stud.su resolves to one IP address: 158.220.103.241.
mail.super-traf.ru, mail.sitestatus.co.za, vmi1513402.contaboserver.net and two other host names share IP numbers with stud.su.
Name Servers
stud.su carries NS records delegating to ns1.contabo.net, ns2.contabo.net and ns3.contabo.net.
The name servers of stud.su overlap at least partially with those of other domains — among them 177.146.62.in-addr.arpa, dearsplanet.com, vegatestsliven.bg and two more.
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 stud.su is handled by a single mail server, mail.stud.su.
mail.stud.su carries a single IP number, which is 158.220.103.241.