`qztc.com`

DNSSEC	⚠️ Not signed
NS	`ns.vs.263idc.net` ⭐ ⚠️ Not in parent delegation
		A	211.100.15.68^{🇨🇳 CHINA-1211.100.15.0/24 China Telecom Beijing Co. Ltd.}
			PTR	`ns.263idc.net`
NS	`ns.263idc.net` ⚠️ Not in zone NS records
		A	211.100.15.68^{🇨🇳 CHINA-1211.100.15.0/24 China Telecom Beijing Co. Ltd.}
			PTR	`ns.263idc.net`
NS	`nsb.263idc.net` ⚠️ Not in zone NS records
		A	211.100.15.85^{🇨🇳 CHINA-1211.100.15.0/24 China Telecom Beijing Co. Ltd.}
			PTR	`nsb.263idc.net.15.100.211.in-addr.arpa`
NS	`nsb.vs.263idc.net` ⚠️ Not in parent delegation
		A	211.100.15.85^{🇨🇳 CHINA-1211.100.15.0/24 China Telecom Beijing Co. Ltd.}
			PTR	`nsb.263idc.net.15.100.211.in-addr.arpa`
MX	`mxw.qztc.com` ⭐
		A	54.209.81.157^{🇺🇸 Amazon54.208.0.0/15 EC2 IAD prefix}
			PTR	`va-mx02.263.net`
		A	128.1.41.229^{🇺🇸 UCLOUD-1128.1.41.0/24 UCloud (HK) Holdings Group Limited}
			PTR	`ucloud-wd-mx1.263.net`
MX	`mx.qztc.com`⁽¹⁰⁾
		A	211.150.82.6^{🇨🇳 CHINA-1211.150.80.0/20 China Telecom Beijing Co. Ltd.}
			PTR	`mx.263.net`
TXT	`v=spf1 include:spf.263.net -all`
SOA	`ns.vs.263idc.net`root@ns.vs.263idc.net serial=28

`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=1774598772

PTR for

136.107.101.202.in-addr.arpa

Subdomains

mail.qztc.com

mxw.qztc.com

mx.qztc.com

www.qztc.com

Same first word

qztc.biz

qztc.org.cn

qztc.edu.cn

qztc.net

qztc.com

Similar names

qtcz.com

qzct.net

cqzt.cc

cztq.cn

cqtz.org

zcqt.com

cqtz.cn

cztq.com

tcqz.com.cn

tczq.shop

tqcz.com

czqt.com

qctz.com.cn

tqzc.cn

qzct.edu.cn

cqtz.com

cztq.net

ztcq.net

DNS History

10 records (6 active, 4 former)

●NSns.263idc.net2026-02-16 → 2026-03-27 · 3 obs

○ 2018-08-28 18:25:50
● 2026-02-16 11:46:02
● 2026-03-27 08:24:28

●NSns.vs.263idc.net2026-02-16 → 2026-03-27 · 3 obs

○ 2018-08-28 18:25:50
● 2026-02-16 11:46:02
● 2026-03-27 08:24:28

○NSns11.xincache.com2015-08-03 → 2015-08-03 · 3 obs

● 2015-08-03 12:15:36
○ 2015-09-09 08:36:36
○ 2026-03-27 08:24:28

○NSns12.xincache.com2015-08-03 → 2015-08-03 · 3 obs

● 2015-08-03 12:15:36
○ 2015-09-09 08:36:36
○ 2026-03-27 08:24:28

○NSns17.xincache.com2015-09-09 → 2018-08-28 · 5 obs

○ 2015-08-03 12:15:36
● 2015-09-09 08:36:36
● 2018-08-28 18:25:50
○ 2026-02-16 11:46:02
○ 2026-03-27 08:24:28

○NSns18.xincache.com2015-09-09 → 2018-08-28 · 5 obs

○ 2015-08-03 12:15:36
● 2015-09-09 08:36:36
● 2018-08-28 18:25:50
○ 2026-02-16 11:46:02
○ 2026-03-27 08:24:28

●NSnsb.263idc.net2026-02-16 → 2026-03-27 · 3 obs

○ 2018-08-28 18:25:50
● 2026-02-16 11:46:02
● 2026-03-27 08:24:28

●NSnsb.vs.263idc.net2026-02-16 → 2026-03-27 · 3 obs

○ 2018-08-28 18:25:50
● 2026-02-16 11:46:02
● 2026-03-27 08:24:28

●MXmx.qztc.com2015-08-03 → 2026-03-27 · 2 obs

● 2015-08-03 12:15:36
● 2026-03-27 08:24:28

●MXmxw.qztc.com2026-02-16 → 2026-03-27 · 3 obs

○ 2015-08-03 12:15:36
● 2026-02-16 11:46:02
● 2026-03-27 08:24:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
qztc.com	ns.263idc.net, nsb.263idc.net	-

✅ Authoritative Response

Server:211.100.15.85

NS records: ns.263idc.net, nsb.263idc.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for qztc.com (unsigned zone)

⏱️ Timing

Total: 3022ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns.vs.263idc.net, nsb.vs.263idc.net`
MX	2	`mxw.qztc.com (pri: 5), mx.qztc.com (pri: 10)`
TXT	1	`v=spf1 include:spf.263.net -all`
SOA	1	`ns.vs.263idc.net root.ns.vs.263idc.net`

Analysis

Hierarchy

qztc.com is a parent of mail.qztc.com, mxw.qztc.com, mx.qztc.com and www.qztc.com.

Name Servers

qztc.com is delegated to four name servers: ns.263idc.net, nsb.263idc.net, ns.vs.263idc.net and nsb.vs.263idc.net.

qztc.com at least partially shares name servers with other domains, for instance bpostchina.com, ebara.cn, jzwygt.com, north-cut.com and we-an.com.