`metro-education.com`

DNSSEC	⚠️ Not signed
NS	`dns21.hichina.com` ⭐
		A	2408:4009:501::29^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 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	139.224.142.110^{🇨🇳 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	`dns22.hichina.com`
		A	2408:4009:501::30^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 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	139.224.142.108^{🇨🇳 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	`mail.metro-education.com` ⭐
		A	61.143.60.86^{🇨🇳 CHINANET-BACKBONE61.140.0.0/14 China Telecom Corporation}
			PTR	`mail.dinglicom.com`
SOA	`dns21.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=1778408306

Subdomains

mail.metro-education.com

Same first word

metro-education.cn

metro-education.com

DNS History

8 records (3 active, 5 former)

●NSdns21.hichina.com2015-05-29 → 2026-05-10 · 3 obs

○ 2008-03-20 14:15:36
● 2015-05-29 08:20:28
● 2026-05-10 10:25:50

●NSdns22.hichina.com2015-05-29 → 2026-05-10 · 3 obs

○ 2008-03-20 14:15:36
● 2015-05-29 08:20:28
● 2026-05-10 10:25:50

●MXmail.metro-education.com2026-04-09 → 2026-05-10 · 3 obs

○ 2020-02-06 23:59:06
● 2026-04-09 03:39:00
● 2026-05-10 10:25:50

○MXmxn.mxhichina.com2015-05-29 → 2020-02-06 · 5 obs

○ 2008-03-20 14:15:36
● 2015-05-29 08:20:28
● 2020-02-06 23:59:06
○ 2026-04-09 03:39:00
○ 2026-05-10 10:25:50

○MXmxw.mxhichina.com2015-05-29 → 2020-02-06 · 5 obs

○ 2008-03-20 14:15:36
● 2015-05-29 08:20:28
● 2020-02-06 23:59:06
○ 2026-04-09 03:39:00
○ 2026-05-10 10:25:50

○A115.29.13.762016-01-23 → 2017-02-03 · 5 obs

○ 2015-10-30 08:16:40
● 2016-01-23 18:24:10
● 2017-02-03 10:34:14
○ 2020-02-06 23:59:06
○ 2026-05-10 10:25:50

○A121.40.140.2122015-05-29 → 2015-10-30 · 5 obs

○ 2008-03-20 14:15:36
● 2015-05-29 08:20:28
● 2015-10-30 08:16:40
○ 2016-01-23 18:24:10
○ 2026-05-10 10:25:50

○A47.102.197.1282020-02-06 → 2020-02-06 · 4 obs

○ 2017-02-03 10:34:14
● 2020-02-06 23:59:06
○ 2026-04-09 03:39:00
○ 2026-05-10 10:25:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net...	-
metro-education.com	dns21.hichina.com, dns22.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.38

NS records: dns21.hichina.com, dns22.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for metro-education.com (unsigned zone)

⏱️ Timing

Total: 1044ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns22.hichina.com, dns21.hichina.com`
MX	1	`mail.metro-education.com (pri: 10)`
SOA	1	`dns21.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns21.hichina.com, dns21.hichina.com, dns21.hichina.com...)

Analysis

Hierarchy

The parent of mail.metro-education.com is metro-education.com.

Name Servers

Two name servers dns21.hichina.com and dns22.hichina.com handle the delegation for metro-education.com.

metro-education.com shares the same name server setup as other domains, for example goworldvip.com, hanlitao.com, solarsketch.com, phaseone.com.cn and arti-sail.com.

metro-education.com at least partially shares name servers with other domains, for example niif.cn, 839955.com, asean-cn.org, wellphone.me and dg99.com.cn.

these name servers commonly pair with expirens3.hichina.com, expirens4.hichina.com, ns7.alidns.com and ns8.alidns.com.

Host names with nine IP numbers: dns21.hichina.com points to: 2408:4009:501::29, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110; dns22.hichina.com points to: 2408:4009:501::30, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

Mail Servers

The mail.metro-education.com mail server handles metro-education.com.

mail.metro-education.com points to a single IP number: 61.143.60.86.

metro-education.com - robtex.com