f-study.com - robtex.com
f-study.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 | ||||||
Subdomains
www.f-study.com |
Same first word
f-study.com |
Similar names
DNS History
7 records (4 active, 3 former)
●NSdns10.hichina.com2015-10-29 → 2026-03-22 · 2 obs
● 2026-03-22 17:52:44
●NSdns9.hichina.com2015-10-29 → 2026-03-22 · 2 obs
● 2026-03-22 17:52:44
○A123.59.72.2112016-01-18 → 2017-02-06 · 5 obs
● 2016-01-18 20:30:48
● 2017-02-06 21:28:34
○ 2018-07-21 15:30:48
○ 2026-03-22 17:52:44
○A61.153.102.992015-10-29 → 2015-10-29 · 3 obs
○ 2016-01-18 20:30:48
○ 2026-03-22 17:52:44
○CNAMEvip.yunxuetang.com2016-01-18 → 2018-07-21 · 4 obs
● 2018-07-21 15:30:48
○ 2026-03-17 11:04:56
○ 2026-03-22 17:52:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| f-study.com | dns9.hichina.com, dns10.hichina.com | 18 records |
✅ Authoritative Response
Server: 120.76.107.41
NS records: dns9.hichina.com, dns10.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for f-study.com (unsigned zone)
⏱️ Timing
Total: 3675ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns9.hichina.com, dns10.hichina.com |
| MX | 2 | mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10) |
| SOA | 1 | dns9.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)
Analysis
Hierarchy
The parent of www.f-study.com is f-study.com.
Name Servers
Two name servers dns10.hichina.com and dns9.hichina.com handle delegation for f-study.com.
f-study.com uses the same name server setup as other domains, for example qqmas.com, aishangzhen.com, topgp.cn, cancss.com and xcctzl.com.
f-study.com shares name servers with other domains at least partially, for instance xyjiance.cn, liuningsiwang.com, bobo2008.com and bothwinner.com.
Host names with nine IP numbers:
dns10.hichina.com points to: 2408:4009:501::18, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.
dns9.hichina.com points to: 2408:4009:501::17, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.
Mail Servers
f-study.com is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.
f-study.com has the same mail server setup as other domains, including fjjgjx.com, bosenchem.com, bytecable.com, ftalent.com and qdreap.com.
f-study.com shares some mail servers with other domains at least partially, for example 66law.cn, dayuegd.com, efunbox.cn and fulucc.com.
Host names with two IPs:
mxbiz1.qq.com points to: 203.205.147.218 and 203.205.232.191.
Host names with a single IP:
mxbiz2.qq.com points to: 203.205.232.191.
Names resolving to 203.205.232.191: mxbiz1.qq.com and mxbiz2.qq.com.