`mas521.com`

DNSSEC	⚠️ Not signed
A	127.0.0.1
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	`mx1.qiye.aliyun.com` ⭐
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
MX	`mx2.qiye.aliyun.com`⁽¹⁰⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
MX	`mx3.qiye.aliyun.com`⁽¹⁵⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
TXT	`v=spf1 include:spf.qiye.aliyun.com -all`
SOA	`dns21.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`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=1777082726

Same first word

mas521.com

Similar names

sam152.com

DNS History

14 records (6 active, 8 former)

●NSdns21.hichina.com2026-04-20 → 2026-04-25 · 3 obs

○ 2017-05-23 12:54:36
● 2026-04-20 14:45:54
● 2026-04-25 02:23:40

●NSdns22.hichina.com2026-04-20 → 2026-04-25 · 3 obs

○ 2017-05-23 12:54:36
● 2026-04-20 14:45:54
● 2026-04-25 02:23:40

○NSns10.cdncenter.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

○NSns11.cdncenter.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

○NSns12.cdncenter.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

○NSns7.cdncenter.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

○NSns8.cdncenter.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

○NSns9.cdncenter.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

○MX111mx.exmail.sina.com2015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

●MXmx1.qiye.aliyun.com2026-04-20 → 2026-04-25 · 3 obs

○ 2017-05-23 12:54:36
● 2026-04-20 14:45:54
● 2026-04-25 02:23:40

●MXmx2.qiye.aliyun.com2026-04-20 → 2026-04-25 · 3 obs

○ 2017-05-23 12:54:36
● 2026-04-20 14:45:54
● 2026-04-25 02:23:40

●MXmx3.qiye.aliyun.com2026-04-20 → 2026-04-25 · 3 obs

○ 2017-05-23 12:54:36
● 2026-04-20 14:45:54
● 2026-04-25 02:23:40

○A111.111.111.1112015-07-15 → 2017-05-23 · 4 obs

● 2015-07-15 02:07:36
● 2017-05-23 12:54:36
○ 2026-04-20 14:45:54
○ 2026-04-25 02:23:40

●A127.0.0.12026-04-20 → 2026-04-25 · 3 obs

○ 2017-05-23 12:54:36
● 2026-04-20 14:45:54
● 2026-04-25 02:23:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mas521.com	dns21.hichina.com, dns22.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.40

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mas521.com (unsigned zone)

⏱️ Timing

Total: 510ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`127.0.0.1`
NS	2	`dns22.hichina.com, dns21.hichina.com`
MX	3	`mx1.qiye.aliyun.com (pri: 5), mx2.qiye.aliyun.com (pri: 10)...`
TXT	1	`v=spf1 include:spf.qiye.aliyun.com -all`
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

IP Addresses

mas521.com points to a single IP number: 127.0.0.1.

Other host names, for instance 204.44.79.81.static.quadranet.com, 167.160.163.13.static.quadranet.com, 12.47.1.85.dynamic.wline.res.cust.swisscom.ch, mail.wiio.de and mail.taboite.fr share IP numbers with mas521.com.

Name Servers

Delegation for mas521.com rests with two name servers, dns21.hichina.com and dns22.hichina.com.

mas521.com shares the same name server setup as other domains, including 5boundless.com, cztf.com, gu5.com.cn, crypto-big.com and brotherway.com.

mas521.com at least partially shares name servers with other domains, for instance xbuild.net, uk-c.com, juchengdu.cn, lookhorizon.shop and compro.me.

These name servers are commonly used alongside expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com and ns2.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

mas521.com is handled by three mail servers: mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

mas521.com shares mail servers with other domains at least in part, for instance allong.net, dshome.com, kamaxgroup.com, camsouth.com.cn and xsedu.net.cn.

these mail servers are often used with mxn.mxhichina.com and mxw.mxhichina.com.

Two-IP host names: mx3.qiye.aliyun.com points to 47.246.136.231 and 47.246.137.47.

One-IP host names: mx1.qiye.aliyun.com points to 47.246.137.47; mx2.qiye.aliyun.com points to 47.246.136.231.

Names pointing to 47.246.136.231: mx3.qiye.aliyun.com and mx2.qiye.aliyun.com.

Names pointing to 47.246.137.47: mx3.qiye.aliyun.com and mx1.qiye.aliyun.com.

mas521.com - robtex.com

mas521.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`mas521.com`

`com`