unicom - dns.ninja
unicom
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.zdnscloud.com ⭐ | ||||||
| A | 203.99.24.1🇨🇳 ZDNS203.99.24.0/24 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| PTR | a.zdnscloud.com | ||||||
| NS | a.zdnscloud.cn | ||||||
| A | 203.99.24.1🇨🇳 ZDNS203.99.24.0/24 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| PTR | a.zdnscloud.com | ||||||
| NS | b.zdnscloud.cn | ||||||
| A | 203.99.25.1🇨🇳 ZDNS203.99.25.0/24 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| PTR | b.zdnscloud.com | ||||||
| NS | c.zdnscloud.com | ||||||
| A | 203.99.26.1🇨🇳 ZDNS203.99.26.0/24 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| PTR | c.zdnscloud.com | ||||||
| NS | d.zdnscloud.com | ||||||
| A | 203.99.27.1🇨🇳 ZDNS203.99.27.0/24 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| NS | f.zdnscloud.cn | ||||||
| A | 116.169.54.111🇨🇳 CHINA169-Backbone116.169.0.0/16 route of Chinaunicom | ||||||
| NS | g.zdnscloud.com | ||||||
| A | 223.72.199.37🇨🇳 CMNET-BEIJING-AP223.72.199.0/24 CMI (Customer Route) | ||||||
| NS | i.zdnscloud.cn | ||||||
| A | 2401:8d00:1::1🇨🇳 ZDNS2401:8d00:1::/48 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| PTR | i.zdnscloud.com | ||||||
| NS | j.zdnscloud.com | ||||||
| A | 2401:8d00:2::1🇨🇳 ZDNS2401:8d00:2::/48 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| PTR | j.zdnscloud.com | ||||||
| SOA | a.zdnscloud.comtd_dns_gtld@knet.cn serial=1369971228 | ||||||
(root)
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.root-servers.net ⭐ | ||||||
| NS | b.root-servers.net | ||||||
| NS | c.root-servers.net | ||||||
| NS | d.root-servers.net | ||||||
| NS | e.root-servers.net | ||||||
| NS | f.root-servers.net | ||||||
| NS | g.root-servers.net | ||||||
| NS | h.root-servers.net | ||||||
| NS | i.root-servers.net | ||||||
| NS | j.root-servers.net | ||||||
| NS | k.root-servers.net | ||||||
| NS | l.root-servers.net | ||||||
| NS | m.root-servers.net | ||||||
| SOA | a.root-servers.netnstld@verisign-grs.com 2026-07-19 #1 | ||||||
Subdomains
Same first word
Similar names
DNS History
20 records (9 active, 11 former)
●NSa.zdnscloud.cn2026-02-15 → 2026-07-19 · 3 obs
● 2026-02-15 14:24:18
● 2026-07-19 19:32:06
●NSa.zdnscloud.com2020-11-17 → 2026-07-19 · 3 obs
● 2020-11-17 10:52:40
● 2026-07-19 19:32:06
●NSb.zdnscloud.cn2026-02-15 → 2026-07-19 · 3 obs
● 2026-02-15 14:24:18
● 2026-07-19 19:32:06
○NSb.zdnscloud.com2020-11-17 → 2020-11-17 · 4 obs
● 2020-11-17 10:52:40
○ 2026-02-15 14:24:18
○ 2026-07-19 19:32:06
●NSc.zdnscloud.com2020-11-17 → 2026-07-19 · 3 obs
● 2020-11-17 10:52:40
● 2026-07-19 19:32:06
●NSd.zdnscloud.com2020-11-17 → 2026-07-19 · 3 obs
● 2020-11-17 10:52:40
● 2026-07-19 19:32:06
●NSf.zdnscloud.cn2026-02-15 → 2026-07-19 · 3 obs
● 2026-02-15 14:24:18
● 2026-07-19 19:32:06
○NSf.zdnscloud.com2020-11-17 → 2020-11-17 · 4 obs
● 2020-11-17 10:52:40
○ 2026-02-15 14:24:18
○ 2026-07-19 19:32:06
●NSg.zdnscloud.com2020-11-17 → 2026-07-19 · 3 obs
● 2020-11-17 10:52:40
● 2026-07-19 19:32:06
●NSi.zdnscloud.cn2026-02-15 → 2026-07-19 · 3 obs
● 2026-02-15 14:24:18
● 2026-07-19 19:32:06
○NSi.zdnscloud.com2020-11-17 → 2020-11-17 · 4 obs
● 2020-11-17 10:52:40
○ 2026-02-15 14:24:18
○ 2026-07-19 19:32:06
●NSj.zdnscloud.com2020-11-17 → 2026-07-19 · 3 obs
● 2020-11-17 10:52:40
● 2026-07-19 19:32:06
○NSns1.dns.nic.unicom2016-03-22 → 2018-04-05 · 4 obs
● 2018-04-05 19:08:18
○ 2020-11-17 10:52:40
○ 2026-07-19 19:32:06
○NSns2.dns.nic.unicom2016-03-22 → 2018-04-05 · 4 obs
● 2018-04-05 19:08:18
○ 2020-11-17 10:52:40
○ 2026-07-19 19:32:06
○NSns3.dns.nic.unicom2016-03-22 → 2018-04-05 · 4 obs
● 2018-04-05 19:08:18
○ 2020-11-17 10:52:40
○ 2026-07-19 19:32:06
○NSns4.dns.nic.unicom2016-03-22 → 2018-04-05 · 4 obs
● 2018-04-05 19:08:18
○ 2020-11-17 10:52:40
○ 2026-07-19 19:32:06
○NSns5.dns.nic.unicom2016-03-22 → 2018-04-05 · 4 obs
● 2018-04-05 19:08:18
○ 2020-11-17 10:52:40
○ 2026-07-19 19:32:06
○NSns6.dns.nic.unicom2016-03-22 → 2018-04-05 · 4 obs
● 2018-04-05 19:08:18
○ 2020-11-17 10:52:40
○ 2026-07-19 19:32:06
○MXyour-dns-needs-immediate-attention.unicom2016-03-22 → 2016-04-02 · 4 obs
● 2016-04-02 15:42:04
○ 2016-12-11 14:50:02
○ 2026-07-19 19:32:06
○A127.0.53.532016-03-22 → 2016-04-02 · 4 obs
● 2016-04-02 15:42:04
○ 2016-12-11 14:50:02
○ 2026-07-19 19:32:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| unicom | a.zdnscloud.cn, b.zdnscloud.cn, c.zdnscloud.com, d.zdnscloud.com... | 8 records |
✅ Authoritative Response
Server:203.99.25.1
NS records: a.zdnscloud.cn, b.zdnscloud.cn, c.zdnscloud.com, d.zdnscloud.com, f.zdnscloud.cn, g.zdnscloud.com, i.zdnscloud.cn, j.zdnscloud.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 168ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 8 | a.zdnscloud.cn, b.zdnscloud.cn... |
| SOA | 1 | a.zdnscloud.com td_dns_gtld.knet.cn |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (a.zdnscloud.cn, b.zdnscloud.cn, c.zdnscloud.com...)
Analysis
Hierarchy
unicom is the parent domain of nic.unicom and www.unicom.
Name Servers
The DNS delegation for unicom covers 9 name servers: a.zdnscloud.cn, b.zdnscloud.cn, f.zdnscloud.cn and 6 more.
unicom shares at least some of its name servers with other domains, including xn--ses554g, xn--otu796d, ren and two others.
These name servers are frequently seen alongside a.zdnscloud.com, i.zdnscloud.cn, c.zdnscloud.com and 4 other name servers.
Host names pointing to a single IP address:
a.zdnscloud.cn points to the IP address 203.99.24.1.
b.zdnscloud.cn points to the IP address 203.99.25.1.
f.zdnscloud.cn points to the IP address 116.169.54.111.
i.zdnscloud.cn points to the IP address 2401:8d00:1::1.
a.zdnscloud.com points to the IP address 203.99.24.1.
c.zdnscloud.com points to the IP address 203.99.26.1.
d.zdnscloud.com points to the IP address 203.99.27.1.
g.zdnscloud.com points to the IP address 223.72.199.37.
j.zdnscloud.com points to the IP address 2401:8d00:2::1.
These two host names — a.zdnscloud.cn and a.zdnscloud.com — each point to 203.99.24.1 IP addresses.