leetcode.cn - dns.ninja
leetcode.cn
| CNAME | 1zi859in9rs1950w.aliyunddos1010.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 203.107.63.81🇨🇳 Alibaba-Cloud203.107.63.0/24 Alibaba (US) Technology Co., Ltd. | ||||||
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=2034916632 | ||||||
rank #583 in the tld
📈 Tranco rank: #40,405
Subdomains
Same first word
leetcode.pro |
leetcode.com |
leetcode.wang |
leetcode.codes |
leetcode.co |
leetcode.jp |
leetcode.cn |
leetcode.in |
leetcode.ca |
leetcode.io |
leetcode.net |
leetcode.uz |
Similar names
DNS History
11 records (6 active, 5 former)
○NSdns17.hichina.com2015-06-07 → 2018-08-10 · 4 obs
● 2015-06-07 02:10:06
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
○NSdns18.hichina.com2015-06-07 → 2018-08-10 · 4 obs
● 2015-06-07 02:10:06
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
●NSvip3.alidns.com2026-02-23 → 2026-06-14 · 3 obs
○ 2018-08-10 08:39:50
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
●NSvip4.alidns.com2026-02-23 → 2026-06-14 · 3 obs
○ 2018-08-10 08:39:50
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
●MXmx1.feishu.cn2026-02-23 → 2026-06-14 · 3 obs
○ 2018-08-10 08:39:50
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
●MXmx2.feishu.cn2026-02-23 → 2026-06-14 · 3 obs
○ 2018-08-10 08:39:50
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
●MXmx3.feishu.cn2026-02-23 → 2026-06-14 · 3 obs
○ 2018-08-10 08:39:50
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
● 2026-02-23 07:50:52
● 2026-06-14 10:46:34
○MXmxbiz1.qq.com2017-01-05 → 2018-08-10 · 4 obs
● 2017-01-05 16:38:46
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
○MXmxbiz2.qq.com2017-01-05 → 2018-08-10 · 4 obs
● 2017-01-05 16:38:46
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
● 2018-08-10 08:39:50
○ 2026-02-23 07:50:52
○ 2026-06-14 10:46:34
●CNAME1zi859in9rs1950w.aliyunddos1010.com2026-02-23 → 2026-06-14 · 5 obs
● 2026-02-23 07:50:52
● 2026-04-25 19:06:12
○ 2026-05-25 23:35:38
● 2026-06-12 01:00:58
● 2026-06-14 10:46:34
● 2026-04-25 19:06:12
○ 2026-05-25 23:35:38
● 2026-06-12 01:00:58
● 2026-06-14 10:46:34
○CNAMEleetcode.cn.cdn.cloudflare.net2026-05-25 → 2026-05-25 · 4 obs
○ 2026-04-25 19:06:12
● 2026-05-25 23:35:38
○ 2026-06-12 01:00:58
○ 2026-06-14 10:46:34
● 2026-05-25 23:35:38
○ 2026-06-12 01:00:58
○ 2026-06-14 10:46:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| leetcode.cn | vip3.alidns.com, vip4.alidns.com | - |
✅ Authoritative Response
Server:170.33.80.11
NS records: vip3.alidns.com, vip4.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for leetcode.cn (unsigned zone)
⏱️ Timing
Total: 1533ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | vip4.alidns.com, vip3.alidns.com |
| MX | 3 | mx2.feishu.cn (pri: 20), mx3.feishu.cn (pri: 30)... |
| TXT | 6 | verification-code-site-App_feishu=FV0u84, google-site-verification=FkB5s_Aawk0mLpI... |
| CNAME | 1 | 1zi859in9rs1950w.aliyunddos1010.com |
| SOA | 1 | vip3.alidns.com hostmaster.hichina.com |
Analysis
Hierarchy
pic.leetcode.cn, analysis.leetcode.cn, assets.leetcode.cn, static.leetcode.cn and logs.leetcode.cn each fall under the parent domain leetcode.cn.
IP Addresses
leetcode.cn directs to one IP number, which is 203.107.63.81.
a6g9qa4rekkw8mhf.aliyunddos1010.com, 1z338f5w5h878r99.aliyunddos1010.com and 1zi859in9rs1950w.aliyunddos1010.com are examples of other host names that share IP numbers with leetcode.cn.