codevs.cn - robtex.com
codevs.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=2035185744 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSf1g1ns1.dnspod.net2015-07-11 → 2026-08-16 · 2 obs
● 2026-08-16 04:28:04
●NSf1g1ns2.dnspod.net2015-07-11 → 2026-08-16 · 2 obs
● 2026-08-16 04:28:04
●A121.40.156.802015-07-11 → 2026-08-16 · 2 obs
● 2026-08-16 04:28:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| codevs.cn | f1g1ns1.dnspod.net, f1g1ns2.dnspod.net | - |
✅ Authoritative Response
Server:36.155.149.35
NS records: f1g1ns1.dnspod.net, f1g1ns2.dnspod.net
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at cn: Error: DNS query timeout: 203.119.29.1 for DNSKEY cn
⏱️ Timing
Total: 4145ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 121.40.156.80 |
| NS | 2 | f1g1ns1.dnspod.net, f1g1ns2.dnspod.net |
| MX | 2 | mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10) |
| SOA | 1 | f1g1ns1.dnspod.net freednsadmin.dnspod.c |
Analysis
IP Addresses
codevs.cn has exactly one IP address — 121.40.156.80.
Name Servers
The NS records for codevs.cn delegate to f1g1ns1.dnspod.net and f1g1ns2.dnspod.net.
The name server configuration of codevs.cn is shared with other domains, for instance duao.net, lujun.info, glyjk.com and two others.
codevs.cn partially shares its NS delegation with several other domains, including caltech.mobi, wandashihua.com, jdbjsncsfd16.icu and two others.
These name servers regularly co-occur with the name servers a.dnspod.com, b.dnspod.com and c.dnspod.com.
Hosts with 8 IP addresses each:
f1g1ns2.dnspod.net maps to 1.12.0.1, 1.13.76.35, 36.155.149.35 and 5 additional IP addresses.
Hosts with 7 IP addresses each:
f1g1ns1.dnspod.net maps to 1.12.0.4, 1.14.119.35, 111.13.13.35 and 4 additional IP addresses.
Mail Servers
codevs.cn uses two mail servers, mxbiz1.qq.com and mxbiz2.qq.com.
The mail server setup of codevs.cn matches that of other domains such as hxxmhscu.cn, windoent.com, ceitcl.com and two others.
The MX records for codevs.cn are at least partially shared with other domains, such as nioo.cn, cmway.net, ziwhoi-tw.asia and jp.vin.