amstrong.cn - robtex.com
amstrong.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.92.80.55🇫🇷 NAMESHIELD81.92.80.0/20 Nameshield-AS20756 | ||||||
| PTR | saspresence.perf1.com | ||||||
| A | 81.92.80.56🇫🇷 NAMESHIELD81.92.80.0/20 Nameshield-AS20756 | ||||||
| NS | nsa.perf1.fr ⭐ | ||||||
| A | 2a01:c8:100::100🇫🇷 NAMESHIELD2a01:c8:100::/40 ANYCAST1-1 | ||||||
| PTR | nsa.perf1.fr | ||||||
| A | 81.92.94.100🇫🇷 NAMESHIELD81.92.94.0/23 ANYCAST1-1 | ||||||
| PTR | nsa.perf1.fr | ||||||
| NS | nsb.perf1.com | ||||||
| A | 2a01:c8:101::100🇫🇷 NAMESHIELD2a01:c8:100::/40 ANYCAST1-1 | ||||||
| PTR | nsb.perf1.com | ||||||
| A | 81.92.95.100🇫🇷 NAMESHIELD81.92.94.0/23 ANYCAST1-1 | ||||||
| PTR | nsb.perf1.com | ||||||
| NS | nsc.perf1.com | ||||||
| A | 2a09:35c0:102::100🇫🇷 NAMESHIELDGRP2a09:35c0:100::/40 NAMESHIELD ANYCAST1-2 | ||||||
| PTR | nsc.perf1.com | ||||||
| A | 152.89.172.100🇫🇷 NAMESHIELDGRP152.89.172.0/23 NAMESHIELD ANYCAST1-2 | ||||||
| PTR | nsc.perf1.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | nsa.perf1.frtechnical@nameshield.net 2026-01-06 #11 | ||||||
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=2034700039 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●A81.92.80.552026-04-14 → 2026-04-22 · 2 obs
● 2026-04-22 18:24:10
●A81.92.80.562026-04-14 → 2026-04-22 · 2 obs
● 2026-04-22 18:24:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| amstrong.cn | nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com | - |
✅ Authoritative Response
Server:152.89.172.100
NS records: nsa.perf1.fr, nsb.perf1.com, nsc.perf1.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for amstrong.cn (unsigned zone)
⏱️ Timing
Total: 1220ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 81.92.80.55, 81.92.80.56 |
| NS | 3 | nsc.perf1.com, nsb.perf1.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | nsa.perf1.fr technical.nameshield.net |
Analysis
IP Addresses
amstrong.cn resolves to two IPs: 81.92.80.55 and 81.92.80.56.
other host names for instance infraplus.com, schneiderelectric.com.br, apcc.ru, autraco.com and telethon.at share IP numbers with amstrong.cn.
Name Servers
amstrong.cn is delegated to three name servers: nsb.perf1.com, nsc.perf1.com and nsa.perf1.fr.
amstrong.cn at least partially shares name servers with other domains, for instance ganpatrimoine.org, entrepreneur-expert.com, adextranet.net, bioderma.com.ro and ifore.org.
These name servers are commonly used with ns0.infravesi.com, ns1.infravesi.com, a.ns.developpement-durable.gouv.fr and b.ns.developpement-durable.gouv.fr.
Host names with two IP numbers:
Host nsb.perf1.com points to 2a01:c8:101::100 and 81.92.95.100.
Host nsc.perf1.com points to 2a09:35c0:102::100 and 152.89.172.100.
Host nsa.perf1.fr points to 2a01:c8:100::100 and 81.92.94.100.