51-tech.com - dns.ninja
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=1783236036 | ||||||
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
○ 2026-07-05 07:34:06
○NSf1g1ns2.dnspod.net2016-12-22 → 2016-12-22 · 4 obs
● 2016-12-22 20:29:48
○ 2026-04-02 00:29:48
○ 2026-07-05 07:34:06
●NSns1.julydns.com2026-04-02 → 2026-07-05 · 3 obs
● 2026-04-02 00:29:48
● 2026-07-05 07:34:06
●NSns2.julydns.com2026-04-02 → 2026-07-05 · 3 obs
● 2026-04-02 00:29:48
● 2026-07-05 07:34:06
○NSns7.cnolnic.net2015-08-07 → 2016-04-07 · 4 obs
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-07-05 07:34:06
○NSns8.cnolnic.net2015-08-07 → 2016-04-07 · 4 obs
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-07-05 07:34:06
○MXmx140c.cnm.cn2015-08-07 → 2016-04-07 · 4 obs
● 2016-04-07 04:00:38
○ 2016-09-14 07:33:38
○ 2026-07-05 07:34:06
●A107.163.133.182026-04-02 → 2026-07-05 · 3 obs
● 2026-04-02 00:29:48
● 2026-07-05 07:34:06
○A123.196.125.892015-08-07 → 2015-11-28 · 4 obs
● 2015-11-28 08:42:04
○ 2016-01-13 16:47:44
○ 2026-07-05 07:34:06
○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
○ 2026-07-05 07:34:06
○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
○ 2026-07-05 07:34:06
🔍 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: 175ms | 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 subdomain of 51-tech.com.
IP Addresses
51-tech.com points to a single IP number: 107.163.133.18.
Host names such as tbszz.com, njzxy.com and www.51-tech.com share their IP numbers with 51-tech.com.
Name Servers
DNS delegation for 51-tech.com points to two name servers: ns1.julydns.com and ns2.julydns.com.
51-tech.com shares its name server setup with other domains, including (0x736578)cell.com, agentruss.com, halfsugarstudio.com and two others.
The name servers of 51-tech.com overlap at least partially with those of other domains — among them ajojjbj.cn, 754523.com, cannianze.cn and two more.
These name servers commonly co-occur with the name servers ns1.judns.com, ns2.judns.com, ns1.onclouddns.com and ns2.onclouddns.com.
Both ns1.julydns.com and ns2.julydns.com have a single IP address, 162.159.48.223, and share it.
Host names pointing to 162.159.48.223 IP addresses: ns1.julydns.com and ns2.julydns.com.