81tech.com - robtex.com
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81tech.com
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=1771291435 | ||||||
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Same first word
Similar names
DNS History
10 records (4 active, 6 former)
○NSdns.bizcn.com2015-07-08 → 2016-05-02 · 4 obs
● 2016-05-02 18:45:20
○ 2026-02-15 00:03:08
○ 2026-02-17 09:45:46
○NSdns.cnmsn.net2015-07-08 → 2016-02-11 · 4 obs
● 2016-02-11 07:18:58
○ 2026-02-15 00:03:08
○ 2026-02-17 09:45:46
●NSdns17.hichina.com2026-02-15 → 2026-02-17 · 3 obs
● 2026-02-15 00:03:08
● 2026-02-17 09:45:46
●NSdns18.hichina.com2026-02-15 → 2026-02-17 · 3 obs
● 2026-02-15 00:03:08
● 2026-02-17 09:45:46
○MXmx.qiye.163.com2015-07-08 → 2017-01-16 · 4 obs
● 2017-01-16 03:23:28
○ 2026-02-15 00:03:08
○ 2026-02-17 09:45:46
●MXmx.ym.163.com2026-02-15 → 2026-02-17 · 3 obs
● 2026-02-15 00:03:08
● 2026-02-17 09:45:46
○MXmx2.qiye.163.com2015-07-08 → 2017-01-16 · 4 obs
● 2017-01-16 03:23:28
○ 2026-02-15 00:03:08
○ 2026-02-17 09:45:46
●A120.24.179.1792026-02-15 → 2026-02-17 · 3 obs
● 2026-02-15 00:03:08
● 2026-02-17 09:45:46
○A121.40.27.1752017-01-16 → 2017-01-16 · 4 obs
● 2017-01-16 03:23:28
○ 2026-02-15 00:03:08
○ 2026-02-17 09:45:46
○A42.120.41.1682015-07-08 → 2016-02-11 · 4 obs
● 2016-02-11 07:18:58
○ 2017-01-16 03:23:28
○ 2026-02-17 09:45:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| 81tech.com | dns17.hichina.com, dns18.hichina.com | - |
✅ Authoritative Response
Server: 120.76.107.40
NS records: dns17.hichina.com, dns18.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 81tech.com (unsigned zone)
⏱️ Timing
Total: 531ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 120.24.179.179 |
| NS | 2 | dns18.hichina.com, dns17.hichina.com |
| MX | 1 | mx.ym.163.com (pri: 10) |
| TXT | 2 | google-site-verification=4pAZEo2Ck9X_C6C, v=spf1 include:spf.163.com ~all |
| SOA | 1 | dns17.hichina.com hostmaster.hichina.com |
AI analysis
81tech.com is parent of bbs.81tech.com and www.81tech.com.
81tech.com points to a single IP: 120.24.179.179.
Other host names, for instance 81uav.cn, share IP numbers with 81tech.com.
81tech.com's delegation is to two name servers dns17.hichina.com and dns18.hichina.com.
81tech.com shares the same name server configuration as other domains, such as duoen.cn, miaopeng.com, mcurf.com, tjjdxw.com and va46x9.com.
81tech.com shares name servers with other domains to at least some extent, for instance balena.info and 0zv.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.
81tech.com is served by a single mail server, mx.ym.163.com.
81tech.com uses the same mail server setup as other domains such as huapukeji.com, boxin.cn, viknails.com, ewopo.com and busgg.com.
81tech.com shares at least partially some mail servers with other domains, for example fosoto.com, miningbulletin.com, 68de.com and xingtu.com.
These mail servers are commonly used alongside the mail servers hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.
mx.ym.163.com points to IP number 111.124.200.35.