21b.com.cn - robtex.com

21b.com.cn

DNSSEC⚠️ Not signed
A142.171.158.140🇺🇸 MULTA-ASN1142.171.128.0/17
PTR140-68-42-100-dedicated.multacom.com
NSns1.22.cn ⭐
A2001:df2:f080:1::5🇭🇰 HKCICL-AS-AP2001:df2:f080::/48 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED
A61.158.128.10🇨🇳 CHINA169-Backbone61.158.128.0/17 CNC Group CHINA169 Henan Province Network
PTR10.128.158.61.ha.cnc
A218.98.111.136🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED
NSns2.22.cn
A240e:97d:10:1402:0:1:0:1002🇨🇳 CHINANET-Guangdong-DongGuan-IDC240e:97d::/36 DongGuan IDC Network
A1.193.216.203🇨🇳 CHINANET-Henan-Luoyang-IDC1.193.216.0/24 Chinatelecom HeNan Province Network
A183.253.57.207🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)
A211.99.99.61🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object
SOAns1.22.cndnsadmin@22.cn serial=1768554480

com.cn

DNSSEC⚠️ Not signed
NSa.dns.cn ⭐ ⚠️ Not in parent delegation
NSb.dns.cn ⚠️ Not in parent delegation
NSc.dns.cn ⚠️ Not in parent delegation
NScns.cernet.net ⚠️ Not in parent delegation
NSd.dns.cn ⚠️ Not in parent delegation
NSe.dns.cn ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2030470798
WOT: NOT_SAFE (20/100)

Same first word

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DNS History

6 records (3 active, 3 former)

20162017201820192020202120222023202420252026NSns1.22.cnns2.22.cnf1g1ns1.dnspod.netf1g1ns2.dnspod.netA142.171.158.140122.112.84.176
○NSf1g1ns1.dnspod.net2015-08-09 → 2017-01-05 · 4 obs
● 2015-08-09 14:26:48
● 2017-01-05 10:20:22
○ 2026-02-21 06:44:00
○ 2026-03-24 03:45:20
○NSf1g1ns2.dnspod.net2015-08-09 → 2015-12-02 · 4 obs
● 2015-08-09 14:26:48
● 2015-12-02 19:09:56
○ 2026-02-21 06:44:00
○ 2026-03-24 03:45:20
●NSns1.22.cn2026-02-21 → 2026-03-24 · 3 obs
○ 2017-01-05 10:20:22
● 2026-02-21 06:44:00
● 2026-03-24 03:45:20
●NSns2.22.cn2026-02-21 → 2026-03-24 · 3 obs
○ 2017-01-05 10:20:22
● 2026-02-21 06:44:00
● 2026-03-24 03:45:20
○A122.112.84.1762015-08-09 → 2017-01-05 · 4 obs
● 2015-08-09 14:26:48
● 2017-01-05 10:20:22
○ 2026-02-21 06:44:00
○ 2026-03-24 03:45:20
●A142.171.158.1402026-02-21 → 2026-03-24 · 3 obs
○ 2017-01-05 10:20:22
● 2026-02-21 06:44:00
● 2026-03-24 03:45:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cnc.dns.cn, b.dns.cn, e.dns.cn, a.dns.cn...-
21b.com.cnns1.22.cn, ns2.22.cn-

✅ Authoritative Response

Server:1.193.216.203

NS records: ns1.22.cn, ns2.22.cn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21b.com.cn (unsigned zone)

⏱️ Timing

Total: 1776ms | Queries: -

📄 Records

TypeCountSample Data
A1142.171.158.140
NS2ns1.22.cn, ns2.22.cn
SOA1ns1.22.cn dnsadmin.22.cn

Analysis

IP Addresses

21b.com.cn points to IP number: 142.171.158.140.

Other host names such as xtgh.cn, 5zj.com.cn, stnew.cn, 6cz.com.cn and 1qj.com.cn share IPs with 21b.com.cn.

Name Servers

21b.com.cn is delegated to two name servers: ns1.22.cn and ns2.22.cn.

21b.com.cn shares the same name server setup as vvye.com, centare.com, afac.cn, ywkp.com and rwqf.cn.

Host names with four IP numbers: ns2.22.cn points to 240e:97d:10:1402:0:1:0:1002, 1.193.216.203, 183.253.57.207 and 211.99.99.61. Host names with three IP numbers: ns1.22.cn points to 2001:df2:f080:1::5, 61.158.128.10 and 218.98.111.136.