52studying.com - robtex.com
52studying.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.205.73.126🇺🇸 GNET-AS9294154.205.64.0/20 | ||||||
| NS | a7.share-dns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | a.share-dns.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | b.share-dns.net ⚠️ Not in zone NS records | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | b7.share-dns.net ⚠️ Not in parent delegation | ||||||
| A | 172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | a.share-dns.commaster@share-dns.com serial=1768459789 | ||||||
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=1774371157 | ||||||
Subdomains
www.52studying.com |
Same first word
52studying.com |
DNS History
15 records (5 active, 10 former)
●NSa.share-dns.com2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 17:03:00
●NSa7.share-dns.com2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 17:03:00
●NSb.share-dns.net2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 17:03:00
●NSb7.share-dns.net2026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 17:03:00
○NSjuming.dnsdun.com2020-02-29 → 2020-02-29 · 3 obs
● 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
○NSjuming.dnsdun.net2020-02-29 → 2020-02-29 · 3 obs
● 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
○NSns1.zhujiwu.com2015-08-15 → 2015-08-15 · 3 obs
○ 2015-11-29 10:51:00
○ 2026-03-24 17:03:00
○NSns2.zhujiwu.com2015-08-15 → 2015-08-15 · 3 obs
○ 2015-11-29 10:51:00
○ 2026-03-24 17:03:00
○MXmxbiz1.qq.com2015-08-15 → 2017-03-15 · 5 obs
● 2015-08-15 04:20:26
● 2017-03-15 05:52:54
○ 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
○MXmxbiz2.qq.com2015-08-15 → 2017-03-15 · 5 obs
● 2015-08-15 04:20:26
● 2017-03-15 05:52:54
○ 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
○A111.67.196.1592016-06-26 → 2017-03-15 · 5 obs
● 2016-06-26 10:33:04
● 2017-03-15 05:52:54
○ 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
●A154.205.73.1262026-03-24 → 2026-03-24 · 2 obs
● 2026-03-24 17:03:00
○A156.252.166.362020-02-29 → 2020-02-29 · 3 obs
● 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
○A182.18.22.2022015-08-15 → 2016-03-03 · 4 obs
● 2016-03-03 19:38:04
○ 2016-06-26 10:33:04
○ 2026-03-24 17:03:00
○CNAMEsk103.webcname.net2015-08-15 → 2017-03-15 · 5 obs
● 2015-08-15 04:20:26
● 2017-03-15 05:52:54
○ 2020-02-29 21:06:18
○ 2026-03-24 17:03:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net... | - |
| 52studying.com | b7.share-dns.net, a7.share-dns.com | 1 record |
✅ Authoritative Response
Server:172.64.52.239
NS records: b7.share-dns.net, a7.share-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 52studying.com (unsigned zone)
⏱️ Timing
Total: 335ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.205.73.126 |
| NS | 2 | a.share-dns.com, b.share-dns.net |
| SOA | 1 | a.share-dns.com master.share-dns.com |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (a7.share-dns.com)
Analysis
Hierarchy
The parent of www.52studying.com is 52studying.com.
IP Addresses
52studying.com points to a single IP address: 154.205.73.126.
Other host names, such as jxsgzc.com and www.52studying.com, share IP numbers with 52studying.com.
Name Servers
52studying.com is delegated to four name servers: a7.share-dns.com, a.share-dns.com, b7.share-dns.net and b.share-dns.net.
52studying.com at least partially shares name servers with other domains, for example llbj-zs.com, sifangtb.com, ux44.com, di1zhu.com and 4d1ea6719593.top.
these name servers are commonly used with the following name servers: a4.share-dns.com, b4.share-dns.net, ns1.gname-dns.com, ns2.gname-dns.com, a1.share-dns.com, b1.share-dns.net, a9.share-dns.com, b9.share-dns.net, a2.share-dns.com and b2.share-dns.net.
a7.share-dns.com points to 172.64.53.25
a.share-dns.com points to 172.64.53.25
b7.share-dns.net points to 172.64.52.239
b.share-dns.net points to 172.64.52.239
a7.share-dns.com and a.share-dns.com point to 172.64.53.25
b7.share-dns.net and b.share-dns.net point to 172.64.52.239