nb51.cn - robtex.com
nb51.cn
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=2034789734 | ||||||
Same first word
Similar names
51nb.site |
15nb.com |
bn51.com |
bn51.ru |
1n5b.aquila.it |
b15n.com |
15bn.com |
51nb.github.io |
bn51.cn |
bn15.co.uk |
51nb.com.cn |
5n1b.com |
DNS History
4 records (4 active, 0 former)
●NSns11.xincache.com2026-03-14 → 2026-05-14 · 2 obs
● 2026-05-14 03:13:08
●NSns12.xincache.com2026-03-14 → 2026-05-14 · 2 obs
● 2026-05-14 03:13:08
●MXmx.ym.163.com2026-03-14 → 2026-05-14 · 2 obs
● 2026-05-14 03:13:08
●A101.36.223.1602026-03-14 → 2026-05-14 · 2 obs
● 2026-05-14 03:13:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| nb51.cn | ns11.xincache.com, ns12.xincache.com | - |
✅ Authoritative Response
Server:112.80.181.111
NS records: ns11.xincache.com, ns12.xincache.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for nb51.cn (unsigned zone)
⏱️ Timing
Total: 2909ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 101.36.223.160 |
| NS | 2 | ns11.xincache.com, ns12.xincache.com |
| MX | 1 | mx.ym.163.com (pri: 10) |
| TXT | 1 | v=spf1 include:spf.163.com ~all |
| SOA | 1 | ns11.xincache.com enterprise1dnsadmin.dn |
Analysis
IP Addresses
nb51.cn resolves to a single IP: 101.36.223.160.
Other host names, for instance host8699128.xincache1.cn, host4827406.xincache1.cn, host4465851.xincache1.cn, host5630685.xincache1.cn and host3741157.xincache1.cn share IP numbers with nb51.cn.
Name Servers
nb51.cn has two name servers: ns11.xincache.com and ns12.xincache.com.
nb51.cn shares the same name server setup as other domains, for example mcedi.com, points.ink, njtm.com.cn, wxlrgg.com and cnjieyi.com.
nb51.cn shares some name servers with other domains, for example yanjilogistics.com, beiyaggt.com, hiec.cn, ljintl.com.cn and yafangya.com.
these name servers are often used with ns19.xincache.com, ns20.xincache.com, ns15.xincache.com, ns16.xincache.com, ce1.xincache.com, ce2.xincache.com, ns13.xincache.com, ns14.xincache.com, ns17.xincache.com and ns18.xincache.com.
Host names with eight IPs:
ns11.xincache.com points to: 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.
Host names with seven IPs:
ns12.xincache.com points to: 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.
Mail Servers
nb51.cn is handled by a single mail server, mx.ym.163.com.
nb51.cn shares the mail server setup with other domains, for example reachievetech.com, carm.cc, chedaia.com, todofun.com and kaei-sz.com.
nb51.cn shares some mail servers with other domains, at least partially; for instance bcoptical.com, wffms.com, syjnc.com, poptoys.net and qdcars.com.
Host name mx.ym.163.com points to IP 111.124.200.35.