51dma.com - robtex.com
51dma.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 156.250.67.94🇿🇦 HKIDC-AS-AP156.250.64.0/18 Shenzhen Jizhan Technology Co., Ltd. | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 47.97.51.45🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.julydns.com ⚠️ Not in parent delegation | ||||||
| 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=1769696861 | ||||||
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=1774604242 | ||||||
Same first word
51dma.com |
Similar names
DNS History
10 records (5 active, 5 former)
○NSdns31.hichina.com2015-07-02 → 2020-01-16 · 4 obs
● 2020-01-16 09:04:40
○ 2026-03-17 20:15:40
○ 2026-03-27 09:54:32
○NSdns32.hichina.com2015-07-02 → 2020-01-16 · 4 obs
● 2020-01-16 09:04:40
○ 2026-03-17 20:15:40
○ 2026-03-27 09:54:32
●NSns1.judns.com2026-03-17 → 2026-03-27 · 3 obs
● 2026-03-17 20:15:40
● 2026-03-27 09:54:32
●NSns1.julydns.com2026-03-17 → 2026-03-27 · 3 obs
● 2026-03-17 20:15:40
● 2026-03-27 09:54:32
●NSns2.judns.com2026-03-17 → 2026-03-27 · 3 obs
● 2026-03-17 20:15:40
● 2026-03-27 09:54:32
●NSns2.julydns.com2026-03-17 → 2026-03-27 · 3 obs
● 2026-03-17 20:15:40
● 2026-03-27 09:54:32
○A121.40.191.752015-07-02 → 2015-07-02 · 3 obs
○ 2015-12-01 17:01:38
○ 2026-03-27 09:54:32
○A121.41.51.192015-12-01 → 2020-01-16 · 5 obs
● 2015-12-01 17:01:38
● 2020-01-16 09:04:40
○ 2026-03-17 20:15:40
○ 2026-03-27 09:54:32
●A156.250.67.942026-03-17 → 2026-03-27 · 3 obs
● 2026-03-17 20:15:40
● 2026-03-27 09:54:32
○A38.249.64.1172026-03-17 → 2026-03-27 · 2 obs
○ 2026-03-27 09:54:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| 51dma.com | ns1.judns.com, ns2.judns.com | 2 records |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51dma.com (unsigned zone)
⏱️ Timing
Total: 3292ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 156.250.67.94 |
| 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.judns.com, ns2.judns.com)
Analysis
IP Addresses
51dma.com points to a single IP address: 156.250.67.94.
Other host names, such as zhtrip.cn and gxlzs.cn, share IP numbers with 51dma.com.
Name Servers
51dma.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
51dma.com at least partially shares name servers with other domains, for example k248.cn, gdzcxd.cn, cyingv.com, bttchb.com and advmob.cn.
These name servers are often used together with jm1.dns.com and jm2.dns.com.
Host names with a single IP address:
The host name ns1.judns.com points to 47.97.51.45.
The host name ns2.judns.com points to 162.159.27.251.
The host name ns1.julydns.com points to 47.97.51.45.
The host name ns2.julydns.com points to 162.159.48.223.
Host names pointing to 47.97.51.45: ns1.judns.com and ns1.julydns.com.