icbc - dns.ninja
icbc
| 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 | ||||||
| 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. | ||||||
| PTR | d.zdnscloud.com | ||||||
| NS | f.zdnscloud.cn | ||||||
| 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. | ||||||
| NS | j.zdnscloud.com | ||||||
| A | 2401:8d00:2::1🇨🇳 ZDNS2401:8d00:2::/48 Internet Domain Name System Beijing Engineering Resrarch Center Ltd. | ||||||
| TXT | v=spf1 include:spf.icbc.com.cn -all | ||||||
| SOA | a.zdnscloud.comtd_dns_gtld@knet.cn serial=1386050295 | ||||||
(root)
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.root-servers.net ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | c.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | d.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | e.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | f.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | g.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | h.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | i.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | j.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | k.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | l.root-servers.net ⚠️ Not in parent delegation | ||||||
| NS | m.root-servers.net ⚠️ Not in parent delegation | ||||||
| SOA | a.root-servers.netnstld@verisign-grs.com 2026-08-07 #0 | ||||||
Subdomains
nic.icbc |
Same first word
Similar names
DNS History
15 records (9 active, 6 former)
●NSa.zdnscloud.cn2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
●NSa.zdnscloud.com2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
○NSa0.nic.icbc2015-09-03 → 2021-02-23 · 4 obs
● 2021-02-23 00:07:52
○ 2026-02-15 07:04:42
○ 2026-08-07 09:41:34
○NSa2.nic.icbc2015-09-03 → 2021-02-23 · 4 obs
● 2021-02-23 00:07:52
○ 2026-02-15 07:04:42
○ 2026-08-07 09:41:34
●NSb.zdnscloud.cn2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
○NSb0.nic.icbc2015-09-03 → 2021-02-23 · 4 obs
● 2021-02-23 00:07:52
○ 2026-02-15 07:04:42
○ 2026-08-07 09:41:34
●NSc.zdnscloud.com2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
○NSc0.nic.icbc2015-09-03 → 2021-02-23 · 4 obs
● 2021-02-23 00:07:52
○ 2026-02-15 07:04:42
○ 2026-08-07 09:41:34
●NSd.zdnscloud.com2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
●NSf.zdnscloud.cn2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
●NSg.zdnscloud.com2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
●NSi.zdnscloud.cn2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
●NSj.zdnscloud.com2026-02-15 → 2026-08-07 · 3 obs
● 2026-02-15 07:04:42
● 2026-08-07 09:41:34
○MXyour-dns-needs-immediate-attention.icbc2015-09-03 → 2015-10-30 · 4 obs
● 2015-10-30 22:13:42
○ 2015-12-31 19:39:28
○ 2026-08-07 09:41:34
○A127.0.53.532015-09-03 → 2015-10-30 · 4 obs
● 2015-10-30 22:13:42
○ 2015-12-31 19:39:28
○ 2026-08-07 09:41:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| icbc | j.zdnscloud.com, f.zdnscloud.cn, d.zdnscloud.com, i.zdnscloud.cn... | 8 records |
✅ Authoritative Response
Server:203.99.27.1
NS records: j.zdnscloud.com, f.zdnscloud.cn, d.zdnscloud.com, i.zdnscloud.cn, a.zdnscloud.cn, c.zdnscloud.com, b.zdnscloud.cn, g.zdnscloud.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 653ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 8 | a.zdnscloud.cn, b.zdnscloud.cn... |
| TXT | 1 | v=spf1 include:spf.icbc.com.cn -all |
| SOA | 1 | a.zdnscloud.com td_dns_gtld.knet.cn |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (g.zdnscloud.com, f.zdnscloud.cn, d.zdnscloud.com...)
Analysis
Hierarchy
icbc serves as the parent of nic.icbc.
Name Servers
icbc carries NS records listing 9 name servers — a.zdnscloud.cn, b.zdnscloud.cn, f.zdnscloud.cn and 6 others.
icbc has at least partial name server overlap with other domains, such as xn--efvy88h, xn--3bst00m, xn--fiq64b and two others.
a.zdnscloud.com, i.zdnscloud.cn and c.zdnscloud.com — plus 3 other name servers — are commonly paired with these name servers.
Host names that point to one IP address:
a.zdnscloud.cn resolves to the IP address 203.99.24.1.
i.zdnscloud.cn resolves to the IP address 2401:8d00:1::1.
a.zdnscloud.com resolves to the IP address 203.99.24.1.
c.zdnscloud.com resolves to the IP address 203.99.26.1.
d.zdnscloud.com resolves to the IP address 203.99.27.1.
g.zdnscloud.com resolves to the IP address 223.72.199.37.
j.zdnscloud.com resolves to the IP address 2401:8d00:2::1.
a.zdnscloud.cn and a.zdnscloud.com each have 203.99.24.1 IP addresses.