openstudy.tech - robtex.com
openstudy.tech
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns19.hichina.com ⚠️ Not in zone NS records | ||||||
| A | 2408:4009:501::27🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.40🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.60🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.200🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.220🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.40🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.60🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.100🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.110🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | dns20.hichina.com ⚠️ Not in zone NS records | ||||||
| A | 2408:4009:501::28🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.38🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.61🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.198🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.222🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.38🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.61🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.98🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.108🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
tech
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns01.trs-dns.com ⭐ | ||||||
| NS | ns.trs-dns.com | ||||||
| NS | ns01.trs-dns.net | ||||||
| NS | ns10.trs-dns.info | ||||||
| NS | ns10.trs-dns.org | ||||||
| SOA | ns.trs-dns.comtrs-ops@tucows.com serial=1790774640 | ||||||
Same first word
Similar names
dostupnye.ru |
soundtype.ai |
soundtype.co |
studyopen.com |
studyopen.top |
soundtype.pro |
typesound.ro |
studyopen.ru |
typesound.app |
soupydent.site |
soundtype.com |
typesound.com |
Previous names
Next names
DNS History
3 records (2 active, 1 former)
●NSdns19.hichina.com2026-09-14 → 2026-09-30 · 2 obs
● 2026-09-30 13:32:12
●NSdns20.hichina.com2026-09-14 → 2026-09-30 · 2 obs
● 2026-09-30 13:32:12
○A43.129.231.1762026-09-14 → 2026-09-14 · 3 obs
○ 2026-09-28 00:18:08
○ 2026-09-30 13:32:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tech | ns10.trs-dns.info, ns01.trs-dns.net, ns01.trs-dns.com, ns10.trs-dns.org | - |
| openstudy.tech | dns19.hichina.com, dns20.hichina.com | - |
✅ Authoritative Response
Server:120.76.107.40
NS records: dns19.hichina.com, dns20.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for openstudy.tech (unsigned zone)
⏱️ Timing
Total: 3547ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 43.129.231.176 |
| NS | 2 | dns20.hichina.com, dns19.hichina.com |
| SOA | 1 | dns19.hichina.com hostmaster.hichina.com |
Analysis
Name Servers
openstudy.tech is delegated to two name servers: dns19.hichina.com and dns20.hichina.com.
openstudy.tech uses the same name servers as several other domains — among them zhiyouhenan.com, hchwn.com, qlawork.cn and two more.
The name servers of openstudy.tech overlap at least partially with those of other domains — among them drsdl.cn, lidiao.net, yztzairport.net and two more.
These name servers commonly appear alongside the name servers expirens3.hichina.com and expirens4.hichina.com.
Hostnames that resolve to 9 IP addresses:
dns19.hichina.com resolves to 39.96.153.40, 39.96.153.60, 47.118.199.200 and 6 other IP addresses.
dns20.hichina.com resolves to 39.96.153.38, 39.96.153.61, 47.118.199.198 and 6 other IP addresses.