nm.cn - robtex.com
nm.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2001:dc7::1🇨🇳 CNNIC-CRITICAL-AP2001:dc7::/48 SICHUANIDC province network | ||||||
| PTR | a.dns.cn | ||||||
| A | 203.119.25.1🇨🇳 CNNIC-CRITICAL-AP203.119.25.0/24 China Internet Network Information Center (CNNIC) | ||||||
| PTR | a.dns.cn | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| A | 2001:dc7:1::1🇨🇳 CNNIC-CRITICAL-AP2001:dc7:1::/48 SICHUANIDC province network | ||||||
| PTR | b.dns.cn | ||||||
| A | 203.119.26.1🇨🇳 CNNIC-CRITICAL-AP203.119.26.0/24 China Internet Network Information Center (CNNIC) | ||||||
| PTR | b.dns.cn | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| A | 2001:dc7:2::1🇨🇳 CNNIC-CRITICAL-AP2001:dc7:2::/48 SICHUANIDC province network | ||||||
| PTR | c.dns.cn | ||||||
| A | 203.119.27.1🇨🇳 CNNIC-CRITICAL-AP203.119.27.0/24 China Internet Network Information Center (CNNIC) | ||||||
| PTR | c.dns.cn | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| A | 2001:250:c006::44🇨🇳 ERX-CERNET-BKB2001:250:c006::/48 | ||||||
| PTR | ns.cernet.net | ||||||
| A | 2001:da8:1:100::44🇨🇳 CNGI-CERNET2-AS-AP2001:da8::/32 | ||||||
| PTR | cns.cernet.net | ||||||
| PTR | ns.cernet.net | ||||||
| A | 2001:dd9::44🇨🇳 CRIS-CERNET-AS2001:dd9::/48 China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | ||||||
| PTR | cns.cernet.net | ||||||
| PTR | ns.cernet.net | ||||||
| A | 103.137.60.44🇨🇳 ERX-CERNET-BKB103.137.60.0/24 China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | ||||||
| PTR | cns.cernet.net | ||||||
| PTR | ns.cernet.net | ||||||
| A | 202.38.109.44🇨🇳 ERX-CERNET-BKB202.38.109.0/24 PACNET (proxy-registered route object) | ||||||
| A | 202.112.0.44🇨🇳 ERX-CERNET-BKB202.112.0.0/24 CMI (Customer Route) | ||||||
| PTR | ns.cernet.net | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| A | 2001:dc7:1000::1🇨🇳 CNNIC-CRITICAL-AP2001:dc7:1000::/48 China Internet Network Information Center | ||||||
| PTR | d.dns.cn | ||||||
| A | 203.119.28.1🇨🇳 CNNIC-CRITICAL-AP203.119.28.0/24 China Internet Network Information Center (CNNIC) | ||||||
| PTR | d.dns.cn | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| A | 2001:dc7:3::1🇨🇳 CNNIC-CRITICAL-AP2001:dc7:3::/48 SICHUANIDC province network | ||||||
| PTR | e.dns.cn | ||||||
| A | 203.119.29.1🇨🇳 CNNIC-CRITICAL-AP203.119.29.0/24 China Internet Network Information Center (CNNIC) | ||||||
| PTR | e.dns.cn | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2027233594 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034863545 | ||||||
Subdomains
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archives.nm.cn |
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teconnectivity.nm.cn |
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Same first word
Similar names
DNS History
8 records (6 active, 2 former)
●NScns.cernet.net2015-08-22 → 2026-06-01 · 2 obs
● 2026-06-01 00:15:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | c.dns.cn, d.dns.cn, a.dns.cn, b.dns.cn... | - |
✅ Authoritative Response
Server:203.119.29.1
NS records: c.dns.cn, d.dns.cn, a.dns.cn, b.dns.cn, e.dns.cn
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 655ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 6 | a.dns.cn, b.dns.cn... |
| SOA | 1 | a.dns.cn root.cnnic.cn |
Analysis
Hierarchy
nm.cn is a parent domain; its children include tl.nm.cn, swoosh.nm.cn, archives.nm.cn, diaosu.nm.cn, teconnectivity.nm.cn and a few other host names.
Name Servers
nm.cn is served by 6 authoritative name servers: a.dns.cn, b.dns.cn, c.dns.cn and three additional ones.
nm.cn partially shares its NS delegation with several other domains, including qh.cn, cq.cn, ah.cn and two others.
These name servers regularly co-occur with the name servers d.dns.cn, e.dns.cn and cns.cernet.net.
Host names resolving to 6 IP numbers:
The hostname cns.cernet.net resolves to 103.137.60.44, 202.38.109.44, 202.112.0.44 and three additional IP addresses.
Hosts with two IP numbers each:
a.dns.cn maps to two IP addresses — 203.119.25.1 and 2001:dc7::1.
b.dns.cn maps to two IP addresses — 203.119.26.1 and 2001:dc7:1::1.
c.dns.cn maps to two IP addresses — 203.119.27.1 and 2001:dc7:2::1.
d.dns.cn maps to two IP addresses — 203.119.28.1 and 2001:dc7:1000::1.
e.dns.cn maps to two IP addresses — 203.119.29.1 and 2001:dc7:3::1.