bz021.cn - robtex.com
bz021.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 127.0.0.1 | ||||||
| NS | ns1.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 60.190.243.160🇨🇳 CT-HangZhou-IDC60.190.243.0/24 Chinanet-HangZhou-IDC | ||||||
| NS | ns2.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 60.190.243.160🇨🇳 CT-HangZhou-IDC60.190.243.0/24 Chinanet-HangZhou-IDC | ||||||
| MX | mail.happyisp.com ⭐ | ||||||
| A | 5.161.49.68🇺🇸 HETZNER-CLOUD2-AS5.161.49.0/24 | ||||||
| PTR | mail.happyisp.com | ||||||
| A | 137.184.158.105🇺🇸 DIGITALOCEAN137.184.144.0/20 DigitalOcean | ||||||
| PTR | mail.happyisp.com | ||||||
| TXT | v=spf1 ip6:fd0d:d741:e183::/48 -all | ||||||
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=2034595400 | ||||||
Subdomains
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
○NSf1g1ns1.dnspod.net2017-05-19 → 2017-05-19 · 3 obs
○ 2020-11-19 18:47:28
○ 2026-03-27 19:06:56
○NSf1g1ns2.dnspod.net2017-05-19 → 2017-05-19 · 3 obs
○ 2020-11-19 18:47:28
○ 2026-03-27 19:06:56
●NSns1.exp.4cun.com2026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:38:32
● 2026-03-27 19:06:56
●NSns2.exp.4cun.com2026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:38:32
● 2026-03-27 19:06:56
●MXmail.happyisp.com2026-03-26 → 2026-03-27 · 2 obs
● 2026-03-27 19:06:56
●A127.0.0.12026-03-26 → 2026-03-27 · 3 obs
● 2026-03-26 13:38:32
● 2026-03-27 19:06:56
○A172.246.227.1732017-05-19 → 2017-05-19 · 3 obs
○ 2020-11-19 18:47:28
○ 2026-03-27 19:06:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| bz021.cn | ns1.exp.4cun.com, ns2.exp.4cun.com | - |
✅ Authoritative Response
Server:60.190.243.160
NS records: ns1.exp.4cun.com, ns2.exp.4cun.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bz021.cn (unsigned zone)
⏱️ Timing
Total: 2332ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 127.0.0.1 |
| MX | 1 | mail.happyisp.com (pri: 1) |
| TXT | 1 | v=spf1 ip6:fd0d:d741:e183::/48 -all |
Analysis
Hierarchy
The parent of jrhhht.bz021.cn, fxdlfv.bz021.cn, 33f7.bz021.cn, fhzvft.bz021.cn and nvvdfv.bz021.cn is bz021.cn.
IP Addresses
bz021.cn points to a single IP: 127.0.0.1.
Other host names, for instance 6911.chunyan2.sinaapp.com, 254.192.146.static.quadranet.com, 75dns1.com, charlesschwab.pro and mail-me1aus01bn2106.outbound.protection.outlook.com share IP numbers with bz021.cn.
Name Servers
bz021.cn's delegation is to two name servers ns1.exp.4cun.com and ns2.exp.4cun.com.
bz021.cn shares the same name server configuration as other domains, such as wscrp.com, guicat.com, okgl.cn, move2sea.com and 1a3w1.com.
bz021.cn shares name servers with other domains to some extent, for instance mhtimes.cn, dsclear.com, jindehen.com and yxconnection.cn.
these name servers are commonly used together with ns3.exp.4cun.com, ns4.exp.4cun.com, ns5.exp.4cun.com and ns6.exp.4cun.com.
Host names with one IP number: ns1.exp.4cun.com and ns2.exp.4cun.com point to 60.190.243.160.
Mail Servers
bz021.cn is served by a single mail server, mail.happyisp.com.
bz021.cn uses the same mail server setup as other domains such as nepi.cn, eastcrossroads.org, anyin.com.cn, kanglian.cn and lisarenesimmons.com.
Hostname mail.happyisp.com resolves to two IPs: 5.161.49.68 and 137.184.158.105.