ohstudy.com - dns.ninja
ohstudy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 34.8.143.225🇺🇸 Google34.8.0.0/13 | ||||||
| PTR | 225.143.8.34.bc.googleusercontent.com | ||||||
| NS | localhost@ ⭐ | ||||||
| NS | ns1.cyberdns.tw | ||||||
| A | 34.80.212.212🇹🇼 Google34.80.208.0/20 | ||||||
| PTR | 212.212.80.34.bc.googleusercontent.com | ||||||
| NS | ns2.cyberdns.tw | ||||||
| A | 35.194.228.87🇹🇼 Google35.194.224.0/20 | ||||||
| PTR | 87.228.194.35.bc.googleusercontent.com | ||||||
| MX | mail.ohstudy.com ⭐ | ||||||
| A | 61.218.70.2🇹🇼 HiNet61.218.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd. | ||||||
| PTR | 61-218-70-2.hinet-ip.hinet.net | ||||||
| TXT | v=spf1 a mx ptr ~all | ||||||
| SOA | localhost@hostmaster@ohstudy.com serial=2013 | ||||||
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=1785334642 | ||||||
Subdomains
mail.ohstudy.com |
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSlocalhost@2026-02-25 → 2026-07-29 · 3 obs
● 2026-02-25 21:03:52
● 2026-07-29 14:44:08
○NSlocalhost\@2015-08-19 → 2017-07-10 · 4 obs
● 2017-07-10 11:58:00
○ 2026-02-25 21:03:52
○ 2026-07-29 14:44:08
●NSns1.cyberdns.tw2026-02-25 → 2026-07-29 · 3 obs
● 2026-02-25 21:03:52
● 2026-07-29 14:44:08
●NSns2.cyberdns.tw2026-02-25 → 2026-07-29 · 3 obs
● 2026-02-25 21:03:52
● 2026-07-29 14:44:08
○NSpdns1.pchome.com.tw2015-08-19 → 2017-07-10 · 4 obs
● 2017-07-10 11:58:00
○ 2026-02-25 21:03:52
○ 2026-07-29 14:44:08
○NSpdns2.pchome.com.tw2015-08-19 → 2017-07-10 · 4 obs
● 2017-07-10 11:58:00
○ 2026-02-25 21:03:52
○ 2026-07-29 14:44:08
●MXmail.ohstudy.com2015-08-19 → 2026-07-29 · 2 obs
● 2026-07-29 14:44:08
○A113.196.231.2242015-08-19 → 2017-07-10 · 4 obs
● 2017-07-10 11:58:00
○ 2026-02-25 21:03:52
○ 2026-07-29 14:44:08
●A34.8.143.2252026-02-25 → 2026-07-29 · 3 obs
● 2026-02-25 21:03:52
● 2026-07-29 14:44:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net... | - |
| ohstudy.com | ns1.cyberdns.tw, ns2.cyberdns.tw | - |
✅ Authoritative Response
Server:34.80.212.212
NS records: ns1.cyberdns.tw, ns2.cyberdns.tw
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ohstudy.com (unsigned zone)
⏱️ Timing
Total: 1465ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 34.8.143.225 |
| NS | 2 | ns1.cyberdns.tw, ns2.cyberdns.tw |
| MX | 1 | mail.ohstudy.com (pri: 10) |
| TXT | 1 | v=spf1 a mx ptr ~all |
| SOA | 1 | localhost@ hostmaster.ohstudy.com |
Analysis
Hierarchy
mail.ohstudy.com is a subdomain of ohstudy.com.
IP Addresses
ohstudy.com directs to one IP number, which is 34.8.143.225.
Among the host names that share IP numbers with ohstudy.com are caresse.com.tw, qtsew.com, 29565220.com and two others.
Name Servers
The authoritative name servers for ohstudy.com are localhost@, ns1.cyberdns.tw and ns2.cyberdns.tw — three in total.
The name servers of ohstudy.com overlap at least partially with those of other domains — among them wdb.com.tw, amazinghall.com.tw, mytour.com.tw and two more.
Both ns1.cyberdns.tw and ns2.cyberdns.tw have a single IP address each — ns1.cyberdns.tw resolves to 34.80.212.212 while ns2.cyberdns.tw resolves to 35.194.228.87.
Mail Servers
ohstudy.com routes its mail through a single mail server, mail.ohstudy.com.
mail.ohstudy.com directs to just one IP number, 61.218.70.2.