`sysdby.com`

DNSSEC	⚠️ Not signed
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}
			PTR	`ip-1-12-0-4.defastlink.net`
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
			PTR	`ip-36-155-149-180.defastlink.net`
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
			PTR	`ip-112-80-181-45.defastlink.net`
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
			PTR	`ip-117-89-178-173.defastlink.net`
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
			PTR	`ip-125-94-59-210.defastlink.net`
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
			PTR	`ip-129-211-176-209.defastlink.net`
NS	`ns12.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}
			PTR	`ip-1-12-0-1.defastlink.net`
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
			PTR	`ip-36-155-149-176.defastlink.net`
		A	112.80.181.111^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
			PTR	`ip-112-80-181-111.defastlink.net`
		A	117.89.178.184^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
			PTR	`ip-117-89-178-184.defastlink.net`
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
			PTR	`ip-129-211-176-239.defastlink.net`
		A	163.177.5.23^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
			PTR	`ip-163-177-5-23.defastlink.net`
SOA	`ns11.xincache.com`ns12@xincache.com serial=1709607706

`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=1771291435

Same first word

sysdby.com

Similar names

syydbs.com

bdyyss.com

syydbs.cn

sdyysb.com

sydybs.com

sysbyd.com

bydssy.com

sdsyby.com

DNS History

6 records (2 active, 4 former)

○NSdns21.hichina.com2015-05-22 → 2017-09-21 · 3 obs

● 2015-05-22 03:10:02
● 2017-09-21 13:29:56
○ 2026-03-24 07:32:40

○NSdns22.hichina.com2015-05-22 → 2017-09-21 · 3 obs

● 2015-05-22 03:10:02
● 2017-09-21 13:29:56
○ 2026-03-24 07:32:40

●NSns11.xincache.com2026-03-24 → 2026-03-24 · 2 obs

○ 2017-09-21 13:29:56
● 2026-03-24 07:32:40

●NSns12.xincache.com2026-03-24 → 2026-03-24 · 2 obs

○ 2017-09-21 13:29:56
● 2026-03-24 07:32:40

○A112.126.16.2512015-05-22 → 2015-10-27 · 4 obs

● 2015-05-22 03:10:02
● 2015-10-27 02:02:34
○ 2016-01-25 21:50:10
○ 2026-03-24 07:32:40

○A116.255.143.842016-01-25 → 2017-09-21 · 4 obs

○ 2015-10-27 02:02:34
● 2016-01-25 21:50:10
● 2017-09-21 13:29:56
○ 2026-03-24 07:32:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
sysdby.com	ns11.xincache.com, ns12.xincache.com	12 records

✅ Authoritative Response

Server:1.12.0.4

NS records: ns11.xincache.com, ns12.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sysdby.com (unsigned zone)

⏱️ Timing

Total: 115ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns12.xincache.com, ns11.xincache.com`
SOA	1	`ns11.xincache.com ns12.xincache.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns11.xincache.com, ns11.xincache.com, ns11.xincache.com...)

Analysis

Name Servers

sysdby.com's delegation uses two name servers, ns11.xincache.com and ns12.xincache.com.

sysdby.com shares the same name server setup as other domains, for example fengbangdz.com, deshli.com, cdhydtg0801.com, pzinn.com and shuhongsupply.com.

sysdby.com at least partially shares name servers with other domains, including uine.cn, hdan.cc, cdfortis.com, yuanzhuo.com and iluban.com.

These name servers are typically used together with the name servers ns19.xincache.com, ns20.xincache.com, ce1.xincache.com, ce2.xincache.com, ns17.xincache.com, ns18.xincache.com, ns15.xincache.com, ns16.xincache.com, ns13.xincache.com and ns14.xincache.com.

Eight IP numbers for host names:

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.

Seven IP numbers for host names:

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.

sysdby.com - robtex.com

sysdby.com

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