optvb.cn - robtex.com
optvb.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 154.206.208.139🇭🇰 GNET-AS9294154.206.208.0/20 | ||||||
| NS | ns1.julydns.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 162.159.48.223Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.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.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=1772028975 | ||||||
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=2035113403 | ||||||
Same first word
optvb.cn |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.julydns.com2026-04-01 → 2026-07-30 · 2 obs
● 2026-07-30 23:43:12
●NSns2.julydns.com2026-04-01 → 2026-07-30 · 2 obs
● 2026-07-30 23:43:12
●A154.206.208.1392026-04-01 → 2026-07-30 · 2 obs
● 2026-07-30 23:43:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| optvb.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optvb.cn (unsigned zone)
⏱️ Timing
Total: 875ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.206.208.139 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
IP Addresses
optvb.cn points to a single IP number: 154.206.208.139.
Name Servers
optvb.cn has four authoritative name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.
optvb.cn shares at least some of its name servers with other domains, including ntzyth.com, baoying360.com, kinensports.com and two others.
These name servers are frequently seen alongside the name servers ns1.onclouddns.com, ns2.onclouddns.com, jm1.dns.com and jm2.dns.com.
ns1.judns.com and ns2.judns.com each resolve to 162.159.27.251, while ns1.julydns.com and ns2.julydns.com each resolve to 162.159.48.223.
Host names pointing to 162.159.27.251 IP addresses: ns1.judns.com and ns2.judns.com.
Host names pointing to 162.159.48.223 IP addresses: ns1.julydns.com and ns2.julydns.com.