`ur-bj.com`

DNSSEC	⚠️ Not signed
A	123.57.153.93^{🇨🇳 Alibaba-Cloud123.57.0.0/16 Alibaba (US) Technology Co., Ltd.}
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	`mx84.dns.com.cn` ⭐
		A	116.198.40.226^{🇨🇳 CHINA169-BJ116.198.0.0/18 116.198.0.0/18}
			PTR	`mx84.dns.com.cn`
SOA	`ns19.xincache.com`enterprise1dnsadmin@dnspod.com serial=1624263770

`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=1774413007

Subdomains

mail.ur-bj.com

Similar names

j-rub.com

DNS History

6 records (4 active, 2 former)

●NSns19.xincache.com2015-08-02 → 2026-03-25 · 2 obs

● 2015-08-02 16:24:42
● 2026-03-25 04:53:54

●NSns20.xincache.com2015-08-02 → 2026-03-25 · 2 obs

● 2015-08-02 16:24:42
● 2026-03-25 04:53:54

○MXmx63.dns.com.cn2015-08-02 → 2018-06-19 · 4 obs

● 2015-08-02 16:24:42
● 2018-06-19 05:42:46
○ 2026-03-25 04:53:50
○ 2026-03-25 04:53:54

●MXmx84.dns.com.cn2026-03-25 → 2026-03-25 · 3 obs

○ 2018-06-19 05:42:46
● 2026-03-25 04:53:50
● 2026-03-25 04:53:54

○A115.239.227.1992015-08-02 → 2015-08-02 · 3 obs

● 2015-08-02 16:24:42
○ 2015-09-16 19:39:18
○ 2026-03-25 04:53:54

●A123.57.153.932015-09-16 → 2026-03-25 · 3 obs

○ 2015-08-02 16:24:42
● 2015-09-16 19:39:18
● 2026-03-25 04:53:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net...	-
ur-bj.com	ns19.xincache.com, ns20.xincache.com	12 records

✅ Authoritative Response

Server:1.12.0.1

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ur-bj.com (unsigned zone)

⏱️ Timing

Total: 70ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`123.57.153.93`
NS	2	`ns19.xincache.com, ns20.xincache.com`
MX	1	`mx84.dns.com.cn (pri: 10)`
SOA	1	`ns19.xincache.com enterprise1dnsadmin.dn`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The parent of mail.ur-bj.com is ur-bj.com.

IP Addresses

ur-bj.com points to IP number: 123.57.153.93.

Name Servers

ur-bj.com is delegated to two name servers: ns19.xincache.com and ns20.xincache.com.

ur-bj.com shares the same name server setup as venkin.com, landun.net, chimicalabs.com, jlbcyy.com and ttm-group.com.cn.

ur-bj.com at least partially shares name servers with other domains, for instance zxjx.com, beicai-elife.com, nylon-ptfe.com, anacasket.com and studw.com.

These name servers are commonly used with ns11.xincache.com and ns12.xincache.com.

Eight IP numbers: ns19.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.

Seven IP numbers: ns20.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

ur-bj.com is handled by a single mail server, mx84.dns.com.cn.

The mail server setup for ur-bj.com matches that of other domains, for instance zcgu.com, slpz.com, chaoxingtong.cn, szchangfa.com and jaleer.com.

ur-bj.com shares at least partially some mail servers with other domains, including g107.com, feicewatch.com, qana.net.cn, mosmode.com and biaoshiqi.com.

these mail servers are commonly used with mx-n.global-mail.cn and mx1-n.global-mail.cn.

mx84.dns.com.cn points to a single IP: 116.198.40.226.

ur-bj.com - robtex.com

ur-bj.com

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