optimization.cn - dns.ninja
optimization.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 208.98.40.71🇺🇸 SHARKTECH-1208.98.40.0/24 | ||||||
| NS | www.optimization.cn ⭐ | ||||||
| A | 208.98.43.77🇺🇸 SHARKTECH-1208.98.43.0/24 | ||||||
| PTR | mta11.jensenstilbud.com | ||||||
| NS | ns1.4.cn ⚠️ Not in zone NS records | ||||||
| A | 107.167.27.66🇺🇸 SHARKTECH-1107.167.27.0/24 CMI (Customer Route) | ||||||
| NS | ns2.4.cn ⚠️ Not in zone NS records | ||||||
| A | 208.98.43.66🇺🇸 SHARKTECH-1208.98.43.0/24 | ||||||
| PTR | jensenstilbud.com | ||||||
| SOA | www.optimization.cnoptimization@cn 2008-08-03 #0 | ||||||
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=2034922143 | ||||||
Subdomains
www.optimization.cn |
Same first word
DNS History
16 records (4 active, 12 former)
●NSns1.4.cn2026-04-04 → 2026-06-15 · 3 obs
● 2026-04-04 10:04:54
● 2026-06-15 21:48:26
●NSns2.4.cn2026-04-04 → 2026-06-15 · 3 obs
● 2026-04-04 10:04:54
● 2026-06-15 21:48:26
●NSwww.optimization.cn2015-07-14 → 2026-06-15 · 5 obs
● 2026-04-05 11:34:48
○ 2026-06-08 05:07:34
● 2026-06-11 16:28:56
● 2026-06-15 21:48:26
○MXio.bouncemx.com2015-11-16 → 2017-01-20 · 4 obs
● 2017-01-20 10:49:20
○ 2018-08-30 19:10:06
○ 2026-06-15 21:48:26
○A208.98.40.2062026-04-05 → 2026-04-05 · 4 obs
● 2026-04-05 11:34:48
○ 2026-06-08 05:07:34
○ 2026-06-15 21:48:26
○A208.98.40.2072026-06-15 → 2026-06-15 · 3 obs
● 2026-06-15 19:18:46
○ 2026-06-15 21:48:26
○A208.98.40.2202026-04-04 → 2026-06-15 · 2 obs
○ 2026-06-15 21:48:26
●A208.98.40.712026-06-15 → 2026-06-15 · 2 obs
● 2026-06-15 21:48:26
○A208.98.43.772026-04-04 → 2026-04-04 · 4 obs
● 2026-04-04 10:04:54
○ 2026-04-05 11:34:48
○ 2026-06-15 21:48:26
○A208.98.43.792026-06-11 → 2026-06-11 · 4 obs
● 2026-06-11 16:28:56
○ 2026-06-15 19:18:46
○ 2026-06-15 21:48:26
○A70.39.84.2372015-11-16 → 2015-11-16 · 4 obs
● 2015-11-16 09:28:04
○ 2016-02-10 18:50:20
○ 2026-06-15 21:48:26
○A70.39.84.2402016-02-10 → 2016-02-10 · 4 obs
● 2016-02-10 18:50:20
○ 2016-04-28 01:58:30
○ 2026-06-15 21:48:26
○A70.39.84.2472017-01-20 → 2017-01-20 · 4 obs
● 2017-01-20 10:49:20
○ 2018-08-30 19:10:06
○ 2026-06-15 21:48:26
○A70.39.84.2492015-07-14 → 2015-07-14 · 3 obs
○ 2018-08-30 19:10:06
○ 2026-06-15 21:48:26
○A70.39.84.2502016-04-28 → 2016-04-28 · 4 obs
● 2016-04-28 01:58:30
○ 2017-01-20 10:49:20
○ 2026-06-15 21:48:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | b.dns.cn, d.dns.cn, e.dns.cn, c.dns.cn... | - |
| optimization.cn | ns1.4.cn, ns2.4.cn | - |
✅ Authoritative Response
Server:208.98.43.66
NS records: ns1.4.cn, ns2.4.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optimization.cn (unsigned zone)
⏱️ Timing
Total: 1162ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 208.98.40.71 |
| SOA | 1 | www.optimization.cn optimization.cn |
Analysis
Hierarchy
www.optimization.cn is a subdomain of optimization.cn.
IP Addresses
optimization.cn points to a single IP number: 208.98.40.71.
Additional host names — www.hkwymed.com, www.tianlin.net, www.pyaolin.com and two others — share IP numbers with optimization.cn.
Name Servers
optimization.cn is delegated to three name servers: ns1.4.cn, ns2.4.cn and www.optimization.cn.
The name servers of optimization.cn overlap at least partially with those of other domains — among them ztr.cn, texie.cn, privacy.com.cn and two more.
These name servers are frequently paired with the name servers ns3.goldenname.com, ns4.goldenname.com, ns3.4.cn and two others.
ns1.4.cn, ns2.4.cn and www.optimization.cn each resolve to a single IP address: ns1.4.cn resolves to 107.167.27.66, ns2.4.cn resolves to 208.98.43.66 and www.optimization.cn resolves to 208.98.43.77.