bz-optical.com - robtex.com
bz-optical.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns17.hichina.com ⭐ | ||||||
| A | 2408:4009:501::25🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.40🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.60🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.200🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.220🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.40🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.60🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.100🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.110🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| NS | dns18.hichina.com | ||||||
| A | 2408:4009:501::26🇨🇳 Alibaba-Cloud2408:4009:501::/48 | ||||||
| A | 39.96.153.38🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 39.96.153.61🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC | ||||||
| A | 47.118.199.198🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 47.118.199.222🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd. | ||||||
| A | 120.76.107.38🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 120.76.107.61🇨🇳 Alibaba-Cloud120.76.0.0/17 | ||||||
| A | 139.224.142.98🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 139.224.142.108🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| MX | qiye163mx01.mxmail.netease.com ⭐ | ||||||
| A | 47.251.71.119🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| A | 47.251.84.126🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| MX | qiye163mx02.mxmail.netease.com(10) | ||||||
| A | 47.251.71.119🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| A | 47.251.84.126🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| TXT | v=spf1 include:spf.163.com ~all | ||||||
| SOA | dns17.hichina.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774480552 | ||||||
Subdomains
www.bz-optical.com |
Same first word
bz-optical.com |
DNS History
4 records (4 active, 0 former)
●NSdns17.hichina.com2017-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 23:33:24
●NSdns18.hichina.com2017-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 23:33:24
●MXqiye163mx01.mxmail.netease.com2017-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 23:33:24
●MXqiye163mx02.mxmail.netease.com2017-08-14 → 2026-03-25 · 2 obs
● 2026-03-25 23:33:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| bz-optical.com | dns17.hichina.com, dns18.hichina.com | 18 records |
✅ Authoritative Response
Server:120.76.107.40
NS records: dns17.hichina.com, dns18.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bz-optical.com (unsigned zone)
⏱️ Timing
Total: 541ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns18.hichina.com, dns17.hichina.com |
| MX | 2 | qiye163mx01.mxmail.netease.com (pri: 5), qiye163mx02.mxmail.netease.com (pri: 10) |
| TXT | 1 | v=spf1 include:spf.163.com ~all |
| SOA | 1 | dns17.hichina.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (dns17.hichina.com, dns17.hichina.com, dns17.hichina.com...)
Analysis
Hierarchy
The parent of www.bz-optical.com is bz-optical.com.
Name Servers
Two name servers dns17.hichina.com and dns18.hichina.com handle the delegation for bz-optical.com.
bz-optical.com shares the same name server setup as other domains, for example kmiao.net, pafeier.com, meetauto.cn, bjhtx.cn and cncon.com.
bz-optical.com shares name servers with other domains to some extent, including wcayk3.cn, iframes.cn, 1kilometer.com and bctaohui.com.
These name servers are often used together with expirens3.hichina.com and expirens4.hichina.com.
Host names with nine IP numbers: dns17.hichina.com points to: 2408:4009:501::25, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110; dns18.hichina.com points to: 2408:4009:501::26, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.
Mail Servers
Two mail servers handle bz-optical.com: qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com.
bz-optical.com shares the same mail server setup as other domains, including tacnon.com, kswly.com, adtoscaffold.com, luosi88.com and reroh.com.
bz-optical.com shares at least some mail servers with other domains, for example jutairfid.com and lzlly.com.cn.
Names with two IPs:
qiye163mx01.mxmail.netease.com points to: 47.251.71.119 and 47.251.84.126.
qiye163mx02.mxmail.netease.com points to: 47.251.71.119 and 47.251.84.126.
Names pointing to 47.251.71.119: qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com.
Names pointing to 47.251.84.126: qiye163mx01.mxmail.netease.com and qiye163mx02.mxmail.netease.com.