51-tech.com - robtex.com
51-tech.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 107.163.133.18🇺🇸 POWERLINE-HK107.163.128.0/18 Powerline Internal use | ||||||
| NS | ns1.julydns.com ⭐ | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.julydns.commaster@jmdns.com serial=1744870433 | ||||||
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=1778723526 | ||||||
Subdomains
www.51-tech.com |
Same first word
51-tech.com |
Similar names
DNS History
11 records (3 active, 8 former)
○NSf1g1ns1.dnspod.net2016-12-22 → 2016-12-22 · 4 obs
● 2016-12-22 20:29:48
○ 2026-04-02 00:29:48
○ 2026-05-14 02:07:24
○NSf1g1ns2.dnspod.net2016-12-22 → 2016-12-22 · 4 obs
● 2016-12-22 20:29:48
○ 2026-04-02 00:29:48
○ 2026-05-14 02:07:24
●NSns1.julydns.com2026-04-02 → 2026-05-14 · 3 obs
● 2026-04-02 00:29:48
● 2026-05-14 02:07:24
●NSns2.julydns.com2026-04-02 → 2026-05-14 · 3 obs
● 2026-04-02 00:29:48
● 2026-05-14 02:07:24
○NSns7.cnolnic.net2015-08-07 → 2016-04-07 · 4 obs
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-05-14 02:07:24
○NSns8.cnolnic.net2015-08-07 → 2016-04-07 · 4 obs
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-05-14 02:07:24
○MXmx140c.cnm.cn2015-08-07 → 2016-04-07 · 4 obs
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-05-14 02:07:24
●A107.163.133.182026-04-02 → 2026-05-14 · 3 obs
● 2026-04-02 00:29:48
● 2026-05-14 02:07:24
○A123.196.125.892015-08-07 → 2015-11-28 · 4 obs
● 2015-11-28 08:42:04
○ 2016-01-13 16:47:44
○ 2026-05-14 02:07:24
○A139.217.29.1682016-01-13 → 2016-04-07 · 5 obs
● 2016-01-13 16:47:44
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-05-14 02:07:24
○A172.252.226.842016-12-22 → 2017-10-06 · 5 obs
● 2016-12-22 20:29:48
● 2017-10-06 02:32:40
○ 2026-04-02 00:29:48
○ 2026-05-14 02:07:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 51-tech.com | ns1.julydns.com, ns2.julydns.com | 2 records |
✅ Authoritative Response
Server:162.159.48.223
NS records: ns1.julydns.com, ns2.julydns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51-tech.com (unsigned zone)
⏱️ Timing
Total: 254ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 107.163.133.18 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.julydns.com, ns2.julydns.com)
Analysis
Hierarchy
www.51-tech.com is a child of 51-tech.com.
IP Addresses
51-tech.com resolves to one IP number: 107.163.133.18.
Other host names, for instance tbszz.com, njzxy.com and www.51-tech.com share IP numbers with 51-tech.com.
Name Servers
51-tech.com's delegation uses two name servers: ns1.julydns.com and ns2.julydns.com.
51-tech.com uses the same name server setup as other domains, such as (0x736578)cell.com, agentruss.com, tiananmenlvyou.com, kehuzoufang.top and xmyx.cn.
51-tech.com at least partially shares name servers with other domains, including 754523.com, cannianze.cn, inkjetindia.com, uttfham.cn and xywcbyy.cn.
These name servers are commonly used together with the name servers ns1.judns.com, ns2.judns.com, ns1.onclouddns.com and ns2.onclouddns.com.
Host names with a single IP number:
The host name ns1.julydns.com points to 162.159.48.223.
The host name ns2.julydns.com points to 162.159.48.223.
Host names pointing to 162.159.48.223: ns1.julydns.com and ns2.julydns.com.