bcoptical.com - dns.ninja

`bcoptical.com`

DNSSEC	⚠️ Not signed
A	123.59.154.172^{🇨🇳 CHINA169-BJ123.59.128.0/19 CloudVsp.Inc}
NS	`ns11.xincache.com` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns19.xincache.com`
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns20.xincache.com`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.111^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.184^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
		A	163.177.5.23^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
MX	`mx1.qiye.aliyun.com` ⭐
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
MX	`mx.ym.163.com`⁽¹⁰⁾
		A	111.124.200.35^{🇨🇳 CHINANET-Guizhou-Guian-IDC111.124.192.0/19}
MX	`mx2.qiye.aliyun.com`⁽¹⁰⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
MX	`mx3.qiye.aliyun.com`⁽¹⁵⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
TXT	`v=spf1 include:spf.163.com ~all`
TXT	`v=spf1 include:spf.qiye.aliyun.com -all`
SOA	`ns11.xincache.com`ns12@xincache.com serial=1617003209

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784186357

Subdomains

ja.bcoptical.com

Same first word

bcoptical.com

Similar names

cobaltpic.com

cboptical.com

DNS History

11 records (8 active, 3 former)

●NSns11.xincache.com2015-06-29 → 2026-07-16 · 7 obs

● 2015-06-29 16:27:10
○ 2015-11-11 12:16:00
○ 2018-11-23 08:14:08
● 2026-02-28 09:06:28
○ 2026-06-23 02:31:50
● 2026-06-23 06:38:40
● 2026-07-16 07:21:18

○NSns12.xincache.com2015-06-29 → 2015-06-29 · 3 obs

● 2015-06-29 16:27:10
○ 2015-11-11 12:16:00
○ 2026-07-16 07:21:18

●NSns19.xincache.com2015-11-11 → 2026-07-16 · 3 obs

○ 2015-06-29 16:27:10
● 2015-11-11 12:16:00
● 2026-07-16 07:21:18

●NSns20.xincache.com2015-11-11 → 2026-07-16 · 3 obs

○ 2015-06-29 16:27:10
● 2015-11-11 12:16:00
● 2026-07-16 07:21:18

●MXmx.ym.163.com2015-06-29 → 2026-07-16 · 5 obs

● 2015-06-29 16:27:10
● 2018-11-23 08:14:08
○ 2026-06-23 02:31:50
● 2026-06-23 06:38:40
● 2026-07-16 07:21:18

●MXmx1.qiye.aliyun.com2026-02-28 → 2026-07-16 · 5 obs

○ 2018-11-23 08:14:08
● 2026-02-28 09:06:28
○ 2026-06-23 02:31:50
● 2026-06-23 06:38:40
● 2026-07-16 07:21:18

●MXmx2.qiye.aliyun.com2026-02-28 → 2026-07-16 · 5 obs

○ 2018-11-23 08:14:08
● 2026-02-28 09:06:28
○ 2026-06-23 02:31:50
● 2026-06-23 06:38:40
● 2026-07-16 07:21:18

●MXmx3.qiye.aliyun.com2026-02-28 → 2026-07-16 · 5 obs

○ 2018-11-23 08:14:08
● 2026-02-28 09:06:28
○ 2026-06-23 02:31:50
● 2026-06-23 06:38:40
● 2026-07-16 07:21:18

○A119.10.36.62015-11-11 → 2017-01-17 · 4 obs

● 2015-11-11 12:16:00
● 2017-01-17 04:12:28
○ 2018-11-23 08:14:08
○ 2026-07-16 07:21:18

○A121.14.65.2162018-11-23 → 2018-11-23 · 4 obs

○ 2017-01-17 04:12:28
● 2018-11-23 08:14:08
○ 2026-02-28 09:06:28
○ 2026-07-16 07:21:18

●A123.59.154.1722026-02-28 → 2026-07-16 · 5 obs

○ 2018-11-23 08:14:08
● 2026-02-28 09:06:28
○ 2026-06-23 02:31:50
● 2026-06-23 06:38:40
● 2026-07-16 07:21:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net...	-
bcoptical.com	ns19.xincache.com, ns20.xincache.com	12 records

✅ Authoritative Response

Server:1.12.0.4

NS records: ns19.xincache.com, ns20.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bcoptical.com (unsigned zone)

⏱️ Timing

Total: 179ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`123.59.154.172`
NS	2	`ns19.xincache.com, ns20.xincache.com`
MX	4	`mx1.qiye.aliyun.com (pri: 5), mx.ym.163.com (pri: 10)...`
TXT	2	`v=spf1 include:spf.qiye.aliyun.com -all, v=spf1 include:spf.163.com ~all`
SOA	1	`ns11.xincache.com ns12.xincache.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns19.xincache.com, ns19.xincache.com, ns19.xincache.com...)

Analysis

Hierarchy

The domain ja.bcoptical.com falls under the parent bcoptical.com.

IP Addresses

bcoptical.com resolves to just one IP address, 123.59.154.172.

Two other host names, along with cndashing.cn, gzchcy.cn and linntec.cn, also share IP numbers with bcoptical.com.

Name Servers

bcoptical.com has three name servers — ns11.xincache.com, ns19.xincache.com and ns20.xincache.com.

At least some of bcoptical.com's name servers are shared with other domains, for example lind.cn, gdsnd.net, yicheng-electric.com and two more.

These name servers tend to co-occur with ns12.xincache.com, ce1.xincache.com, ce2.xincache.com and 6 other name servers in the same DNS delegations.

DNS names with 8 IP addresses:

ns11.xincache.com points to 1.12.0.4, 36.155.149.180, 112.80.181.45 and 5 other IP addresses.

ns19.xincache.com points to 1.12.0.4, 36.155.149.180, 112.80.181.45 and 5 other IP addresses.

DNS names with 7 IP addresses:

ns20.xincache.com points to 1.12.0.1, 36.155.149.176, 112.80.181.111 and 4 other IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 2402:4e00:1470:2::e IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 2402:4e00:1730::e IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 1.12.0.4 IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 36.155.149.180 IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 112.80.181.45 IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 117.89.178.173 IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 125.94.59.210 IP addresses.

The host names ns11.xincache.com and ns19.xincache.com both resolve to 129.211.176.209 IP addresses.

Mail Servers

Mail for bcoptical.com is handled by four mail servers: mx.ym.163.com, mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

There is at least a partial MX overlap between bcoptical.com and other domains, including rocketcloud.cn, iwangqu.com, yisitu.com and two others.

It is common to find these mail servers used together with the mail servers mxn.mxhichina.com and mxw.mxhichina.com.

Host names that have two IP addresses:

mx3.qiye.aliyun.com resolves to 47.246.136.231 and 47.246.137.47.

Host names that point to one IP address:

mx.ym.163.com resolves to 111.124.200.35.

mx1.qiye.aliyun.com resolves to 47.246.137.47.

mx2.qiye.aliyun.com resolves to 47.246.136.231.

The host names mx3.qiye.aliyun.com and mx2.qiye.aliyun.com both resolve to 47.246.136.231 IP addresses.

The host names mx3.qiye.aliyun.com and mx1.qiye.aliyun.com both resolve to 47.246.137.47 IP addresses.