optcom.cn - robtex.com
optcom.cn
cn
| DNSSEC | ⚠️ Not signed | ||||||
| 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=2034602955 | ||||||
Same first word
Similar names
DNS History
15 records (5 active, 10 former)
○NSdns.4cun.com2015-08-03 → 2015-11-16 · 4 obs
● 2015-11-16 12:00:02
○ 2016-01-29 08:07:42
○ 2026-03-29 02:53:36
●NSns11.xincache.com2016-01-29 → 2026-03-29 · 3 obs
● 2016-01-29 08:07:42
● 2026-03-29 02:53:36
●NSns12.xincache.com2016-01-29 → 2026-03-29 · 3 obs
● 2016-01-29 08:07:42
● 2026-03-29 02:53:36
○NSns17.xincache.com2016-01-29 → 2016-12-23 · 5 obs
● 2016-01-29 08:07:42
● 2016-12-23 07:31:48
○ 2026-02-18 02:28:06
○ 2026-03-29 02:53:36
○NSns18.xincache.com2016-01-29 → 2016-12-23 · 5 obs
● 2016-01-29 08:07:42
● 2016-12-23 07:31:48
○ 2026-02-18 02:28:06
○ 2026-03-29 02:53:36
○MXmx-n.global-mail.cn2016-01-29 → 2016-12-23 · 5 obs
● 2016-01-29 08:07:42
● 2016-12-23 07:31:48
○ 2026-02-18 02:28:06
○ 2026-03-29 02:53:36
○MXmx.xinnetdns.com2015-08-03 → 2015-11-16 · 4 obs
● 2015-11-16 12:00:02
○ 2016-01-29 08:07:42
○ 2026-03-29 02:53:36
○MXmx1-n.global-mail.cn2016-01-29 → 2016-12-23 · 5 obs
● 2016-01-29 08:07:42
● 2016-12-23 07:31:48
○ 2026-02-18 02:28:06
○ 2026-03-29 02:53:36
●MXmxc.global-mail.cn2026-03-01 → 2026-03-29 · 3 obs
● 2026-03-01 01:17:44
● 2026-03-29 02:53:36
○MXmxf.global-mail.cn2026-02-18 → 2026-02-27 · 5 obs
● 2026-02-18 02:28:06
● 2026-02-27 21:47:28
○ 2026-03-01 01:17:44
○ 2026-03-29 02:53:36
○MXmxf1.global-mail.cn2026-02-18 → 2026-02-27 · 5 obs
● 2026-02-18 02:28:06
● 2026-02-27 21:47:28
○ 2026-03-01 01:17:44
○ 2026-03-29 02:53:36
●MXmxu.global-mail.cn2026-03-01 → 2026-03-29 · 3 obs
● 2026-03-01 01:17:44
● 2026-03-29 02:53:36
●A101.36.222.1002026-02-18 → 2026-03-29 · 3 obs
● 2026-02-18 02:28:06
● 2026-03-29 02:53:36
○A114.112.59.1922015-08-03 → 2015-11-16 · 4 obs
● 2015-11-16 12:00:02
○ 2016-01-29 08:07:42
○ 2026-03-29 02:53:36
○A119.10.44.752016-01-29 → 2016-12-23 · 5 obs
● 2016-01-29 08:07:42
● 2016-12-23 07:31:48
○ 2026-02-18 02:28:06
○ 2026-03-29 02:53:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | d.dns.cn, b.dns.cn, a.dns.cn, c.dns.cn... | - |
| optcom.cn | ns11.xincache.com, ns12.xincache.com | - |
✅ Authoritative Response
Server:112.80.181.45
NS records: ns11.xincache.com, ns12.xincache.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optcom.cn (unsigned zone)
⏱️ Timing
Total: 1334ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 101.36.222.100 |
| NS | 2 | ns11.xincache.com, ns12.xincache.com |
| MX | 2 | mxc.global-mail.cn (pri: 5), mxu.global-mail.cn (pri: 50) |
| TXT | 1 | v=spf1 include:spfv.global-mail.cn -all |
| SOA | 1 | ns11.xincache.com ns12.xincache.com |
Analysis
IP Addresses
optcom.cn points to a single IP address: 101.36.222.100.
Other host names such as shdmet.com, hyasset.cn, westwood2w.com, laibide.cn and strongsun.com share IP numbers with optcom.cn.
Name Servers
optcom.cn is delegated to two name servers: ns11.xincache.com and ns12.xincache.com.
optcom.cn uses the same name server setup as other domains, including fllzx.com, cresda.com.cn, hyjy-logistics.com, jnlqsh.com and wxchengtong.com.
At least part of the name servers for optcom.cn are shared with other domains, for instance qdhuanghai.com, hdl-china.com, k-max.com.cn, expo-top.com and shlidiao.com.
these name servers are commonly used with the name servers ce1.xincache.com, ce2.xincache.com, ns13.xincache.com, ns14.xincache.com, ns19.xincache.com, ns20.xincache.com, ns17.xincache.com, ns18.xincache.com, ns15.xincache.com and ns16.xincache.com.
Host names with eight IP numbers: ns11.xincache.com points to 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209. Host names with seven IP numbers: ns12.xincache.com points to 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.
Mail Servers
optcom.cn is handled by two mail servers: mxc.global-mail.cn and mxu.global-mail.cn.
optcom.cn uses the same mail server setup as other domains, for instance fjzwt.com, tjpfdjys.com, ngatec.com, strongsun.com and maxcotech.com.
optcom.cn shares at least some mail servers with other domains, for example nxdcf.com, hangye.net, hlbp.com, chinalic.com and media6.com.cn.
Hostnames with a single IP
mxc.global-mail.cn resolves to: 101.36.121.182.
mxu.global-mail.cn resolves to: 117.50.223.79.