51dhd.cn - robtex.com
51dhd.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 122.247.216.250🇨🇳 CHINATELECOM-ZHEJIANG-NINGBO-IDC122.247.216.0/21 Chinanet-NingBo-IDC | ||||||
| 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=1776074589 | ||||||
cn
| DNSSEC | ⚠️ Not signed | ||||||
| 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=2034796045 | ||||||
Subdomains
m.51dhd.cn |
Same first word
51dhd.cn |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.julydns.com2026-04-14 → 2026-05-15 · 2 obs
● 2026-05-15 13:15:32
●NSns2.julydns.com2026-04-14 → 2026-05-15 · 2 obs
● 2026-05-15 13:15:32
●A122.247.216.2502026-04-14 → 2026-05-15 · 2 obs
● 2026-05-15 13:15:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| 51dhd.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 51dhd.cn (unsigned zone)
⏱️ Timing
Total: 864ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 122.247.216.250 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
Hierarchy
51dhd.cn is the parent of m.51dhd.cn.
IP Addresses
51dhd.cn resolves to one IP number: 122.247.216.250.
other host names including hubei.ktflsgm.cn, kqmjwx.cn, www.vryuju.com, ugtob78.cn and ytkwxbd.cn share IP numbers with 51dhd.cn.
Name Servers
51dhd.cn is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
51dhd.cn at least partially shares name servers with other domains, for instance lzdyw.com, nconvert.com, aqlxxig.cn, bjsfh.com.cn and obtop.com.
These name servers are commonly used alongside ns1.onclouddns.com and ns2.onclouddns.com.
Host names with a single IP:
ns1.judns.com points to 162.159.27.251.
ns2.judns.com points to 162.159.27.251.
ns1.julydns.com points to 162.159.48.223.
ns2.julydns.com points to 162.159.48.223.
Host names pointing to 162.159.27.251: ns1.judns.com and ns2.judns.com.
Host names pointing to 162.159.48.223: ns1.julydns.com and ns2.julydns.com.