leetcodechina.com - dns.ninja
leetcodechina.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783666507 | ||||||
MX for
leetcodechina.com |
Subdomains
www.leetcodechina.com |
Same first word
leetcodechina.com |
DNS History
6 records (6 active, 0 former)
●NSdns10.hichina.com2026-02-26 → 2026-07-10 · 2 obs
● 2026-07-10 07:03:50
●NSdns9.hichina.com2026-02-26 → 2026-07-10 · 2 obs
● 2026-07-10 07:03:50
●MXleetcodechina.com2026-02-26 → 2026-07-10 · 2 obs
● 2026-07-10 07:03:50
●MXmxn.mxhichina.com2026-02-26 → 2026-07-10 · 2 obs
● 2026-07-10 07:03:50
●MXmxw.mxhichina.com2026-02-26 → 2026-07-10 · 2 obs
● 2026-07-10 07:03:50
●A121.43.113.442026-02-26 → 2026-07-10 · 2 obs
● 2026-07-10 07:03:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| leetcodechina.com | dns9.hichina.com, dns10.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.41
NS records: dns9.hichina.com, dns10.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for leetcodechina.com (unsigned zone)
⏱️ Timing
Total: 4825ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 121.43.113.44 |
| NS | 2 | dns10.hichina.com, dns9.hichina.com |
| MX | 3 | mxn.mxhichina.com (pri: 10), mxw.mxhichina.com (pri: 5)... |
| SOA | 1 | dns9.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)
Analysis
Hierarchy
The domain www.leetcodechina.com falls under the parent leetcodechina.com.
Mail Server Role
The MX record for leetcodechina.com points back to leetcodechina.com — it is its own mail server.
mxn.mxhichina.com and mxw.mxhichina.com are often paired with leetcodechina.com as mail servers.
IP Addresses
leetcodechina.com directs to one IP number, which is 121.43.113.44.
Other host names, among them www.leetcodechina.com and www.leetcode-cn.com, have IP numbers in common with leetcodechina.com.
Name Servers
Two name servers handle the delegation for leetcodechina.com: dns10.hichina.com and dns9.hichina.com.
leetcodechina.com has the same name server delegation as a number of other domains, such as jialangchuanqi.com, chinarpe.com, o.cn and two more.
At least some of leetcodechina.com's name servers are shared with other domains, for example ckmooc.com and letuantuan.com.
Host names resolving to 9 IP numbers:
dns10.hichina.com resolves to 39.96.153.41, 39.96.153.51 and 47.118.199.201 among others, with 6 other IP addresses in total.
dns9.hichina.com resolves to 39.96.153.42, 39.96.153.52 and 47.118.199.202 among others, with 6 other IP addresses in total.
Mail Servers
The MX configuration for leetcodechina.com lists three mail servers: leetcodechina.com, mxn.mxhichina.com and mxw.mxhichina.com.
leetcodechina.com shares at least some of its mail servers with other domains — for example jinhegufen.com, gssnw.com, witstan.com and two more.
Hosts with two IP numbers each:
mxn.mxhichina.com resolves to two addresses: 47.246.136.231 and 47.246.137.47.
Hosts that resolve to one IP address:
The hostname leetcodechina.com resolves to 121.43.113.44.
The hostname mxw.mxhichina.com resolves to 47.246.99.195.