www.f-study.com - robtex.com

www.f-study.com

CNAMEvip.yunxuetang.com
DNSSEC⚠️ Not signed
A106.75.58.208🇨🇳 CHINA169-BJ106.75.32.0/19 China Telecom Beijing Co. Ltd.
PTRbe0lnl.cn

f-study.com

DNSSEC⚠️ Not signed
NSdns9.hichina.com ⭐
NSdns10.hichina.com
MXmxbiz1.qq.com ⭐
MXmxbiz2.qq.com(10)
SOAdns9.hichina.comhostmaster@hichina.com 2026-01-12 #9

Same first word

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DNS History

1 record (1 active, 0 former)

20192020202120222023202420252026CNAMEvip.yunxuetang.com
●CNAMEvip.yunxuetang.com2018-08-30 → 2026-03-23 · 2 obs
● 2018-08-30 14:20:32
● 2026-03-23 02:34:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
f-study.comdns9.hichina.com, dns10.hichina.com18 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: 3592ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1vip.yunxuetang.com

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

IP Addresses

www.f-study.com points to a single IP number: 106.75.58.208.

Other host names such as zuche.yunxuetang.com, www.yunxuetang.com and vip.yunxuetang.com share IP numbers with www.f-study.com.