`redbirdedu.com`

DNSSEC	⚠️ Not signed
NS	`dns15.hichina.com` ⭐
		A	2408:4009:501::23^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.122^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns16.hichina.com`
		A	2408:4009:501::24^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.121^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mxhichina.com -all`
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1774633287

Subdomains

www.redbirdedu.com

Same first word

redbirdedu.com

DNS History

6 records (4 active, 2 former)

●NSdns15.hichina.com2026-03-27 → 2026-03-27 · 2 obs

○ 2018-08-05 16:50:40
● 2026-03-27 17:50:10

●NSdns16.hichina.com2026-03-27 → 2026-03-27 · 2 obs

○ 2018-08-05 16:50:40
● 2026-03-27 17:50:10

○NSvip1.alidns.com2017-01-04 → 2018-08-05 · 3 obs

● 2017-01-04 21:39:26
● 2018-08-05 16:50:40
○ 2026-03-27 17:50:10

○NSvip2.alidns.com2017-01-04 → 2018-08-05 · 3 obs

● 2017-01-04 21:39:26
● 2018-08-05 16:50:40
○ 2026-03-27 17:50:10

●MXmxbiz1.qq.com2017-01-04 → 2026-03-27 · 2 obs

● 2017-01-04 21:39:26
● 2026-03-27 17:50:10

●MXmxbiz2.qq.com2017-01-04 → 2026-03-27 · 2 obs

● 2017-01-04 21:39:26
● 2026-03-27 17:50:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
redbirdedu.com	dns15.hichina.com, dns16.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.41

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for redbirdedu.com (unsigned zone)

⏱️ Timing

Total: 510ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
TXT	2	`v=spf1 include:spf.mxhichina.com -all, v=spf1 include:spf.mail.qq.com ~all`
SOA	1	`dns15.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)

Analysis

Hierarchy

redbirdedu.com is the parent of www.redbirdedu.com.

Name Servers

redbirdedu.com is delegated to two name servers dns15.hichina.com and dns16.hichina.com.

redbirdedu.com shares the same name server setup as other domains, for instance seagree.com, hongno.com, fgdt.cn, liuguangyicai.com and runtaihengye.com.

redbirdedu.com at least partially shares name servers with other domains, for instance gtdata.cn, vbn.cc, cakra.cn, longtime.net and mrpjw.com.

these name servers are often used together with expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.alidns.com.

Host names with nine IP numbers:

dns15.hichina.com points to: 2408:4009:501::23, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

dns16.hichina.com points to: 2408:4009:501::24, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

Mail Servers

Two mail servers handle redbirdedu.com: mxbiz1.qq.com and mxbiz2.qq.com.

redbirdedu.com shares the same mail server setup as other domains, for instance sc-esm.com, matrix-hub.com, 576tv.cn, qunjielong.com and whsii.com.

redbirdedu.com shares at least some mail servers with other domains, including weilangedu.com, sfreest.com, neusncp.com and qihongju.com.

redbirdedu.com - robtex.com

redbirdedu.com

com