www.zk21.com - robtex.com
www.zk21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 220.189.251.253🇨🇳 CHINANET-BACKBONE220.184.0.0/13 China Telecom Network | ||||||
zk21.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.alidns.com ⭐ | ||||||
| NS | ns2.alidns.com | ||||||
| SOA | ns1.alidns.comhostmaster@hichina.com 2026-06-04 #13 | ||||||
WOT: UNKNOWN (61/100)
Same first word
Similar names
DNS History
4 records (1 active, 3 former)
○A218.11.0.1152017-03-17 → 2017-03-17 · 4 obs
○ 2016-07-01 11:17:12
● 2017-03-17 02:12:14
○ 2020-01-15 03:39:00
○ 2026-07-14 17:31:34
● 2017-03-17 02:12:14
○ 2020-01-15 03:39:00
○ 2026-07-14 17:31:34
○A220.189.251.2522015-06-17 → 2016-07-01 · 4 obs
● 2015-06-17 01:31:06
● 2016-07-01 11:17:12
○ 2017-03-17 02:12:14
○ 2026-07-14 17:31:34
● 2016-07-01 11:17:12
○ 2017-03-17 02:12:14
○ 2026-07-14 17:31:34
●A220.189.251.2532026-03-26 → 2026-07-14 · 3 obs
○ 2020-01-15 03:39:00
● 2026-03-26 01:58:38
● 2026-07-14 17:31:34
● 2026-03-26 01:58:38
● 2026-07-14 17:31:34
○CNAMEzj0136.dbappwaf.cn2017-03-17 → 2020-01-15 · 4 obs
● 2017-03-17 02:12:14
● 2020-01-15 03:39:00
○ 2026-03-26 01:58:38
○ 2026-07-14 17:31:34
● 2020-01-15 03:39:00
○ 2026-03-26 01:58:38
○ 2026-07-14 17:31:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| zk21.com | ns1.alidns.com, ns2.alidns.com | 18 records |
✅ Authoritative Response
Server:120.76.107.46
NS records: ns1.alidns.com, ns2.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for zk21.com (unsigned zone)
⏱️ Timing
Total: 3532ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 220.189.251.253 |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (ns1.alidns.com, ns1.alidns.com, ns1.alidns.com...)
Analysis
IP Addresses
www.zk21.com resolves to just one IP address, 220.189.251.253.