ynstudy.cn - robtex.com
ynstudy.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.148.244.67🇭🇰 AS401696103.148.244.0/23 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| 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=1772554598 | ||||||
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=2034628226 | ||||||
Same first word
ynstudy.cn |
DNS History
10 records (5 active, 5 former)
○NSns1.51dns.com2015-06-30 → 2016-04-28 · 4 obs
● 2016-04-28 05:12:28
○ 2026-04-03 07:37:40
○ 2026-04-03 07:37:42
●NSns1.judns.com2026-04-03 → 2026-04-03 · 3 obs
● 2026-04-03 07:37:40
● 2026-04-03 07:37:42
●NSns1.julydns.com2026-04-03 → 2026-04-03 · 3 obs
● 2026-04-03 07:37:40
● 2026-04-03 07:37:42
○NSns2.51dns.com2015-06-30 → 2016-04-28 · 4 obs
● 2016-04-28 05:12:28
○ 2026-04-03 07:37:40
○ 2026-04-03 07:37:42
●NSns2.judns.com2026-04-03 → 2026-04-03 · 3 obs
● 2026-04-03 07:37:40
● 2026-04-03 07:37:42
●NSns2.julydns.com2026-04-03 → 2026-04-03 · 3 obs
● 2026-04-03 07:37:40
● 2026-04-03 07:37:42
●A103.148.244.672026-04-03 → 2026-04-03 · 3 obs
● 2026-04-03 07:37:40
● 2026-04-03 07:37:42
○A192.169.121.1552015-06-30 → 2016-04-28 · 4 obs
● 2016-04-28 05:12:28
○ 2017-01-07 17:39:52
○ 2026-04-03 07:37:42
○A43.242.200.2472026-04-03 → 2026-04-03 · 2 obs
○ 2026-04-03 07:37:42
○A58.64.176.312018-06-06 → 2018-06-06 · 4 obs
● 2018-06-06 07:58:50
○ 2026-04-03 07:37:40
○ 2026-04-03 07:37:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, c.dns.cn, b.dns.cn, d.dns.cn... | - |
| ynstudy.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 ynstudy.cn (unsigned zone)
⏱️ Timing
Total: 4545ms | 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
ynstudy.cn points to a single IP number: 103.148.244.67.
other host names for instance kuaileyouyou.com, pb24.cn, axinpo.com, www.kpkp.sxbwtd.com and lelongchuan.com share IP numbers with ynstudy.cn.
Name Servers
ynstudy.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
ynstudy.cn at least partially shares name servers with other domains, for instance zanmir.com, ajqt.com, yxfctc.com, hmvk.cn and swslrope.com.
Host names with one IP number:
ns1.judns.com points to 47.97.51.45.
ns2.judns.com points to 162.159.27.251.
ns1.julydns.com points to 47.97.51.45.
ns2.julydns.com points to 162.159.48.223.
Host names pointing to 47.97.51.45: ns1.judns.com and ns1.julydns.com.