cetstudy.cn - dns.ninja
cetstudy.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.148.244.67🇭🇰 AS401696103.148.244.0/23 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| 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 | 162.159.27.251Cloudflare162.159.27.0/24 , 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 | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1772554696 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2035177605 | ||||||
Same first word
cetstudy.cn |
Similar names
DNS History
14 records (5 active, 9 former)
○NSf1g1ns1.dnspod.net2015-06-11 → 2015-06-11 · 3 obs
○ 2016-02-04 07:30:28
○ 2026-08-14 01:28:18
○NSf1g1ns2.dnspod.net2015-06-11 → 2015-06-11 · 3 obs
○ 2016-02-04 07:30:28
○ 2026-08-14 01:28:18
●NSns1.judns.com2026-03-01 → 2026-08-14 · 3 obs
● 2026-03-01 05:41:22
● 2026-08-14 01:28:18
●NSns1.julydns.com2026-03-01 → 2026-08-14 · 3 obs
● 2026-03-01 05:41:22
● 2026-08-14 01:28:18
●NSns2.judns.com2026-03-01 → 2026-08-14 · 3 obs
● 2026-03-01 05:41:22
● 2026-08-14 01:28:18
●NSns2.julydns.com2026-03-01 → 2026-08-14 · 3 obs
● 2026-03-01 05:41:22
● 2026-08-14 01:28:18
○NSv1.dns234.net2018-10-08 → 2018-10-08 · 4 obs
● 2018-10-08 02:19:42
○ 2026-03-01 05:41:22
○ 2026-08-14 01:28:18
○NSv2.dns234.net2018-10-08 → 2018-10-08 · 4 obs
● 2018-10-08 02:19:42
○ 2026-03-01 05:41:22
○ 2026-08-14 01:28:18
○MXmail.skrimple.com2015-10-31 → 2015-10-31 · 3 obs
○ 2016-02-04 07:30:28
○ 2026-08-14 01:28:18
●A103.148.244.672026-04-10 → 2026-08-14 · 3 obs
● 2026-04-10 10:40:10
● 2026-08-14 01:28:18
○A104.164.174.2052018-10-08 → 2018-10-08 · 4 obs
● 2018-10-08 02:19:42
○ 2026-03-01 05:41:22
○ 2026-08-14 01:28:18
○A127.0.0.12015-10-31 → 2015-10-31 · 3 obs
○ 2016-02-04 07:30:28
○ 2026-08-14 01:28:18
○A166.88.167.42018-10-08 → 2018-10-08 · 4 obs
● 2018-10-08 02:19:42
○ 2026-03-01 05:41:22
○ 2026-08-14 01:28:18
○A43.242.200.2472026-03-01 → 2026-03-01 · 4 obs
● 2026-03-01 05:41:22
○ 2026-04-10 10:40:10
○ 2026-08-14 01:28:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| cetstudy.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cetstudy.cn (unsigned zone)
⏱️ Timing
Total: 1103ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.148.244.67 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
cetstudy.cn resolves to one IP address: 103.148.244.67.
subaru.zsqhs.com, flashme.com.cn, m.yiyingqp.com and two other host names share IP numbers with cetstudy.cn.
Name Servers
The authoritative name servers for cetstudy.cn are ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
The name servers of cetstudy.cn overlap at least partially with those of other domains — among them greeer.com, eqty.cn, 93nh.com and two more.
These name servers commonly appear alongside the name servers ns1.onclouddns.com and ns2.onclouddns.com.
Four host names each point to one IP address: ns1.judns.com and ns2.judns.com both point to 162.159.27.251, and ns1.julydns.com and ns2.julydns.com both point to 162.159.48.223.
ns1.judns.com along with ns2.judns.com each resolve to 162.159.27.251 IP addresses.
ns1.julydns.com along with ns2.julydns.com each resolve to 162.159.48.223 IP addresses.