`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=1776943917

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 → 2026-04-23 · 5 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
● 2026-04-23 11:38:18

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

● 2015-06-29 16:27:10
○ 2015-11-11 12:16:00
○ 2026-04-23 11:38:18

●NSns19.xincache.com2015-11-11 → 2026-04-23 · 3 obs

○ 2015-06-29 16:27:10
● 2015-11-11 12:16:00
● 2026-04-23 11:38:18

●NSns20.xincache.com2015-11-11 → 2026-04-23 · 3 obs

○ 2015-06-29 16:27:10
● 2015-11-11 12:16:00
● 2026-04-23 11:38:18

●MXmx.ym.163.com2015-06-29 → 2026-04-23 · 2 obs

● 2015-06-29 16:27:10
● 2026-04-23 11:38:18

●MXmx1.qiye.aliyun.com2026-02-28 → 2026-04-23 · 3 obs

○ 2015-06-29 16:27:10
● 2026-02-28 09:06:28
● 2026-04-23 11:38:18

●MXmx2.qiye.aliyun.com2026-02-28 → 2026-04-23 · 3 obs

○ 2015-06-29 16:27:10
● 2026-02-28 09:06:28
● 2026-04-23 11:38:18

●MXmx3.qiye.aliyun.com2026-02-28 → 2026-04-23 · 3 obs

○ 2015-06-29 16:27:10
● 2026-02-28 09:06:28
● 2026-04-23 11:38:18

○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
○ 2026-04-23 11:38:18

○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
○ 2026-04-23 11:38:18

●A123.59.154.1722026-02-28 → 2026-04-23 · 3 obs

○ 2018-11-23 08:14:08
● 2026-02-28 09:06:28
● 2026-04-23 11:38:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.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: 159ms | Queries: -

📄 Records

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

IP Addresses

bcoptical.com points to a single IP number: 123.59.154.172.

Other host names, for instance cndashing.cn, gzchcy.cn, linntec.cn, hzxlkj.com and hhgjg.cn share IP numbers with bcoptical.com.

Name Servers

The domain bcoptical.com is delegated to three name servers: ns11.xincache.com, ns19.xincache.com and ns20.xincache.com.

bcoptical.com shares name servers with other domains at least partially, for instance lind.cn, yicheng-electric.com, bjfao.net, extrain.com.cn and mycsgm.com.