yb.cn - robtex.com
yb.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.sfn.cn ⚠️ Not in zone NS records | ||||||
| NS | ns2.sfn.cn ⚠️ Not in zone NS records | ||||||
| A | 101.37.119.99🇨🇳 Alibaba-Cloud101.37.0.0/17 | ||||||
| A | 111.63.77.30🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route) | ||||||
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=2035089041 | ||||||
Same first word
Similar names
DNS History
10 records (2 active, 8 former)
○NSdns1.ybcei.gov.cn2016-11-24 → 2017-01-07 · 5 obs
○ 2016-07-18 09:49:58
● 2016-11-24 12:18:04
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
● 2016-11-24 12:18:04
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
○NSdns1.yibin.gov.cn2016-07-18 → 2016-07-18 · 3 obs
● 2016-07-18 09:49:58
○ 2016-11-24 12:18:04
○ 2026-07-25 16:39:30
○ 2016-11-24 12:18:04
○ 2026-07-25 16:39:30
○NSdns2.ybcei.gov.cn2016-11-24 → 2017-01-07 · 5 obs
○ 2016-07-18 09:49:58
● 2016-11-24 12:18:04
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
● 2016-11-24 12:18:04
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
○NSdns2.yibin.gov.cn2016-07-18 → 2016-07-18 · 3 obs
● 2016-07-18 09:49:58
○ 2016-11-24 12:18:04
○ 2026-07-25 16:39:30
○ 2016-11-24 12:18:04
○ 2026-07-25 16:39:30
○NSns.yb.cn2016-07-18 → 2017-01-07 · 4 obs
● 2016-07-18 09:49:58
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
●NSns1.sfn.cn2026-07-04 → 2026-07-25 · 3 obs
○ 2017-01-07 23:04:40
● 2026-07-04 00:28:20
● 2026-07-25 16:39:30
● 2026-07-04 00:28:20
● 2026-07-25 16:39:30
●NSns2.sfn.cn2026-07-04 → 2026-07-25 · 3 obs
○ 2017-01-07 23:04:40
● 2026-07-04 00:28:20
● 2026-07-25 16:39:30
● 2026-07-04 00:28:20
● 2026-07-25 16:39:30
○MXmail.yibin.gov.cn2015-10-23 → 2017-01-07 · 4 obs
● 2015-10-23 12:21:14
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
○A10.12.65.1892017-01-07 → 2017-01-07 · 4 obs
○ 2016-11-24 12:18:04
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
● 2017-01-07 23:04:40
○ 2026-07-04 00:28:20
○ 2026-07-25 16:39:30
○A218.89.64.782015-06-12 → 2016-11-24 · 4 obs
● 2015-06-12 06:48:16
● 2016-11-24 12:18:04
○ 2017-01-07 23:04:40
○ 2026-07-25 16:39:30
● 2016-11-24 12:18:04
○ 2017-01-07 23:04:40
○ 2026-07-25 16:39:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| yb.cn | ns1.sfn.cn, ns2.sfn.cn | 3 records |
✅ Authoritative Response
Server:111.63.77.29
NS records: ns1.sfn.cn, ns2.sfn.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for yb.cn (unsigned zone)
⏱️ Timing
Total: 4810ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.sfn.cn, ns2.sfn.cn, ns2.sfn.cn)
Analysis
Name Servers
DNS delegation for yb.cn points to two name servers: ns1.sfn.cn and ns2.sfn.cn.
The name server configuration of yb.cn is shared with other domains, for instance bsg.com.cn, etz.gov.cn, ypec.com.cn and two others.
yb.cn has partial name server overlap with other domains, including nmgcaw.gov.cn.
Host names pointing to two IP addresses:
ns2.sfn.cn has two IP addresses: 101.37.119.99 and 111.63.77.30.