study313.com - robtex.com
study313.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.12.31.240🇺🇸 AS401696154.12.24.0/21 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 101.37.78.254🇨🇳 Alibaba-Cloud101.37.0.0/17 CMI (Customer Route) | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 101.37.78.254🇨🇳 Alibaba-Cloud101.37.0.0/17 CMI (Customer Route) | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1791701761 | ||||||
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=1794634581 | ||||||
Same first word
study313.com |
Previous names
Next names
DNS History
5 records (5 active, 0 former)
●NSns1.julydns.com2026-10-16 → 2026-11-14 · 2 obs
● 2026-11-14 05:38:32
●NSns2.julydns.com2026-10-16 → 2026-11-14 · 2 obs
● 2026-11-14 05:38:32
●A154.12.31.2402026-10-16 → 2026-11-14 · 2 obs
● 2026-11-14 05:38:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, f.gtld-servers.net... | - |
| study313.com | ns1.judns.com, ns2.judns.com | 2 records |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for study313.com (unsigned zone)
⏱️ Timing
Total: 1210ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.12.31.240 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)
Analysis
IP Addresses
study313.com has exactly one IP address — 154.12.31.240.
chenengdai.com, junshengfalv.com, yomi666.com plus two other host names have IP numbers in common with study313.com.
Name Servers
Four name servers handle the delegation for study313.com: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
The name servers of study313.com overlap at least partially with those of other domains — among them hbbrvbb.cn, xuetanip.com, ynlxzs.com and two more.
These name servers commonly co-occur with the name servers ns1.onclouddns.com, ns2.onclouddns.com, jm1.dns.com and jm2.dns.com.
Host names pointing to two IP addresses:
The A records for ns1.judns.com return 101.37.78.254 and 162.159.48.223.
The A records for ns1.julydns.com return 101.37.78.254 and 162.159.48.223.
Host names resolving to a single IP address:
ns2.judns.com resolves to the IP address 162.159.27.251.
ns2.julydns.com resolves to the IP address 162.159.27.251.
ns1.judns.com and ns1.julydns.com each have 101.37.78.254 IP addresses.
ns1.judns.com and ns1.julydns.com each have 162.159.48.223 IP addresses.
ns2.judns.com and ns2.julydns.com each have 162.159.27.251 IP addresses.