21txbook.cn - robtex.com
21txbook.cn
| CNAME | www.21txbook.com | ||||||
| CNAME | www.21txbook.com.a1.initxa.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 117.68.90.153🇨🇳 Chinanet-AnHui-WuHu-IDC117.68.80.0/20 ChinaTelecom Anhui Prov WuHu ChengDong IDC | ||||||
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=2035037961 | ||||||
Same first word
DNS History
7 records (5 active, 2 former)
○NS(root)2015-06-25 → 2018-01-27 · 4 obs
● 2015-06-25 21:44:18
● 2018-01-27 07:29:22
○ 2026-03-16 01:26:12
○ 2026-07-14 03:00:40
● 2018-01-27 07:29:22
○ 2026-03-16 01:26:12
○ 2026-07-14 03:00:40
●NSdns11.hichina.com2026-03-16 → 2026-07-14 · 3 obs
○ 2018-01-27 07:29:22
● 2026-03-16 01:26:12
● 2026-07-14 03:00:40
● 2026-03-16 01:26:12
● 2026-07-14 03:00:40
●NSdns12.hichina.com2026-03-16 → 2026-07-14 · 3 obs
○ 2018-01-27 07:29:22
● 2026-03-16 01:26:12
● 2026-07-14 03:00:40
● 2026-03-16 01:26:12
● 2026-07-14 03:00:40
○A210.14.156.1872015-06-25 → 2018-01-27 · 4 obs
● 2015-06-25 21:44:18
● 2018-01-27 07:29:22
○ 2026-03-16 01:26:12
○ 2026-07-14 03:00:40
● 2018-01-27 07:29:22
○ 2026-03-16 01:26:12
○ 2026-07-14 03:00:40
●CNAMEwww.21txbook.com2026-03-16 → 2026-07-14 · 2 obs
● 2026-03-16 01:26:12
● 2026-07-14 03:00:40
● 2026-07-14 03:00:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| 21txbook.cn | dns11.hichina.com, dns12.hichina.com | - |
✅ Authoritative Response
Server:120.76.107.42
NS records: dns11.hichina.com, dns12.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21txbook.cn (unsigned zone)
⏱️ Timing
Total: 1905ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns11.hichina.com, dns12.hichina.com |
| MX | 2 | mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10) |
| TXT | 1 | v=spf1 include:spf.mail.qq.com ~all |
| CNAME | 1 | www.21txbook.com |
| SOA | 1 | dns11.hichina.com hostmaster.hichina.com |
Analysis
IP Addresses
21txbook.cn resolves to one IP address: 117.68.90.153.
sanyuangui.com, ipipp.com, sentry.mfuns.net.a1.initaq.com and two other host names share IP numbers with 21txbook.cn.