sy.js.cn - robtex.com
sy.js.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns.jsinfo.net ⚠️ Not in zone NS records | ||||||
| A | 221.228.255.2🇨🇳 CHINANET-BACKBONE221.224.0.0/13 ChinaNet Jiangsu Network | ||||||
| PTR | ns.jsinfo.net | ||||||
| NS | ns.ptt.js.cn ⚠️ Not in zone NS records | ||||||
| A | 218.2.135.2🇨🇳 CHINANET-BACKBONE218.2.0.0/16 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| PTR | ns.ptt.js.cn | ||||||
js.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2027244740 | ||||||
rank #317 in the tld
WOT: SAFE (99/100)
Same first word
Similar names
DNS History
4 records (2 active, 2 former)
○NSnmc1.ptt.js.cn2015-08-15 → 2016-04-06 · 6 obs
○ 2015-11-07 15:23:06
○ 2015-12-31 07:42:30
● 2016-04-06 10:57:18
○ 2016-09-24 08:14:02
○ 2026-05-01 18:25:12
○NSnmc1.ptt.js.cn.sy.js.cn2015-08-15 → 2016-09-24 · 6 obs
● 2015-12-31 07:42:30
○ 2016-04-06 10:57:18
● 2016-09-24 08:14:02
○ 2026-04-29 03:03:48
○ 2026-05-01 18:25:12
●NSns.jsinfo.net2015-08-15 → 2026-05-01 · 2 obs
● 2026-05-01 18:25:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| sy.js.cn | ns.ptt.js.cn, ns.jsinfo.net | 1 record |
✅ Authoritative Response
Server:218.2.135.2
NS records: ns.ptt.js.cn, ns.jsinfo.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sy.js.cn (unsigned zone)
⏱️ Timing
Total: 4788ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns.ptt.js.cn)
Analysis
Name Servers
sy.js.cn is delegated to two name servers: ns.jsinfo.net and ns.ptt.js.cn.
sy.js.cn shares the same name server setup as 92.117.in-addr.arpa, 230.114.in-addr.arpa, 68.102.202.in-addr.arpa, 16.102.202.in-addr.arpa and 85.102.202.in-addr.arpa.
sy.js.cn at least partially shares name servers with other domains, for instance 124.111.202.in-addr.arpa, 75.102.202.in-addr.arpa, 124.180.in-addr.arpa, yc.jsinfo.net and huaian.js.cn.
These name servers are commonly used alongside pub.jsinfo.net, 1234.124.111.202.in-addr.arpa, 1234.75.102.202.in-addr.arpa, 1234.124.180.in-addr.arpa, 1234.yc.jsinfo.net, 1234.huaian.js.cn, 1234.49.102.202.in-addr.arpa, 1234.217.114.in-addr.arpa, 1234.57.102.202.in-addr.arpa and 1234.76.102.202.in-addr.arpa.
Host names with a single IP:
ns.jsinfo.net points to 221.228.255.2.
ns.ptt.js.cn points to 218.2.135.2.