`02521.com`

DNSSEC	⚠️ Not signed
A	203.107.45.167^{🇨🇳 Alibaba-Cloud203.107.45.0/24 Alibaba (US) Technology Co., Ltd.}
		PTR	`catl.com`
NS	`dns17.hichina.com` ⭐
		A	2408:4009:501::25^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-40.defastlink.net`
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-60.defastlink.net`
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-200.defastlink.net`
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-220.defastlink.net`
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-40.defastlink.net`
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-60.defastlink.net`
		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,}
			PTR	`ip-139-224-142-100.defastlink.net`
		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,}
			PTR	`ip-139-224-142-110.defastlink.net`
NS	`dns18.hichina.com`
		A	2408:4009:501::26^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-38.defastlink.net`
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-61.defastlink.net`
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-198.defastlink.net`
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-222.defastlink.net`
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-38.defastlink.net`
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-61.defastlink.net`
		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,}
			PTR	`ip-139-224-142-98.defastlink.net`
		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,}
			PTR	`ip-139-224-142-108.defastlink.net`
MX	`mxdomain.qq.com` ⭐
SOA	`dns17.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=1771291435

WOT: UNKNOWN (64/100)

Same first word

02521.com

02521.cn

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15202.com

50212.com

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01522.us

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12250.us

DNS History

20 records (4 active, 16 former)

●NSdns17.hichina.com2026-03-14 → 2026-03-14 · 3 obs

○ 2017-05-22 23:14:38
● 2026-03-14 11:33:52
● 2026-03-14 11:33:54

●NSdns18.hichina.com2026-03-14 → 2026-03-14 · 3 obs

○ 2017-05-22 23:14:38
● 2026-03-14 11:33:52
● 2026-03-14 11:33:54

○NSf1g1ns1.dnspod.net2015-07-31 → 2016-09-02 · 5 obs

○ 2008-11-29 02:06:56
● 2015-07-31 19:30:20
● 2016-09-02 03:27:16
○ 2017-05-22 23:14:38
○ 2026-03-14 11:33:54

○NSf1g1ns2.dnspod.net2015-07-31 → 2016-09-02 · 5 obs

○ 2008-11-29 02:06:56
● 2015-07-31 19:30:20
● 2016-09-02 03:27:16
○ 2017-05-22 23:14:38
○ 2026-03-14 11:33:54

○NSns.xinnet.cn2008-11-29 → 2008-11-29 · 3 obs

● 2008-11-29 02:06:56
○ 2015-07-31 19:30:20
○ 2026-03-14 11:33:54

○NSns.xinnetdns.com2008-11-29 → 2008-11-29 · 3 obs

● 2008-11-29 02:06:56
○ 2015-07-31 19:30:20
○ 2026-03-14 11:33:54

○NSns11.xincache.com2017-05-22 → 2017-05-22 · 4 obs

○ 2016-09-02 03:27:16
● 2017-05-22 23:14:38
○ 2026-03-14 11:33:52
○ 2026-03-14 11:33:54

○NSns12.xincache.com2017-05-22 → 2017-05-22 · 4 obs

○ 2016-09-02 03:27:16
● 2017-05-22 23:14:38
○ 2026-03-14 11:33:52
○ 2026-03-14 11:33:54

○MX1382742457.pamx1.hotmail.com2008-11-29 → 2008-11-29 · 3 obs

● 2008-11-29 02:06:56
○ 2015-07-31 19:30:20
○ 2026-03-14 11:33:54

●MXmxdomain.qq.com2015-07-31 → 2026-03-14 · 3 obs

○ 2008-11-29 02:06:56
● 2015-07-31 19:30:20
● 2026-03-14 11:33:54

○A119.28.48.2142015-11-24 → 2015-11-24 · 4 obs

○ 2015-10-08 16:06:32
● 2015-11-24 17:07:36
○ 2016-02-17 21:05:12
○ 2026-03-14 11:33:54

○A119.28.48.2172015-07-31 → 2015-07-31 · 4 obs

○ 2008-11-29 02:06:56
● 2015-07-31 19:30:20
○ 2015-09-18 07:20:34
○ 2026-03-14 11:33:54

○A119.28.48.2252015-07-31 → 2015-07-31 · 4 obs

○ 2008-11-29 02:06:56
● 2015-07-31 19:30:20
○ 2015-09-18 07:20:34
○ 2026-03-14 11:33:54

○A119.28.48.2272016-02-17 → 2016-02-17 · 4 obs

○ 2015-11-24 17:07:36
● 2016-02-17 21:05:12
○ 2016-02-19 07:08:00
○ 2026-03-14 11:33:54

○A119.28.48.2282015-10-08 → 2015-10-08 · 4 obs

○ 2008-11-29 02:06:56
● 2015-10-08 16:06:32
○ 2015-11-24 17:07:36
○ 2026-03-14 11:33:54

○A119.28.48.2292015-09-18 → 2016-09-02 · 8 obs

○ 2008-11-29 02:06:56
● 2015-09-18 07:20:34
○ 2015-10-08 16:06:32
○ 2016-02-17 21:05:12
● 2016-02-19 07:08:00
● 2016-09-02 03:27:16
○ 2017-05-22 23:14:38
○ 2026-03-14 11:33:54

●A203.107.45.1672026-03-14 → 2026-03-14 · 3 obs

○ 2017-05-22 23:14:38
● 2026-03-14 11:33:52
● 2026-03-14 11:33:54

○A218.28.188.2412008-11-29 → 2008-11-29 · 3 obs

● 2008-11-29 02:06:56
○ 2015-07-31 19:30:20
○ 2026-03-14 11:33:54

○A98.142.141.1112017-05-22 → 2017-05-22 · 4 obs

○ 2016-09-02 03:27:16
● 2017-05-22 23:14:38
○ 2026-03-14 11:33:52
○ 2026-03-14 11:33:54

○CNAMEdnspod-free.mydnspod.net2015-07-31 → 2016-09-02 · 5 obs

○ 2008-11-29 02:06:56
● 2015-07-31 19:30:20
● 2016-09-02 03:27:16
○ 2017-05-22 23:14:38
○ 2026-03-14 11:33:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net, b.gtld-servers.net...	-
02521.com	dns17.hichina.com, dns18.hichina.com	18 records

✅ Authoritative Response

Server: 120.76.107.38

NS records: dns17.hichina.com, dns18.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 02521.com (unsigned zone)

⏱️ Timing

Total: 3853ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.107.45.167`
NS	2	`dns18.hichina.com, dns17.hichina.com`
MX	1	`mxdomain.qq.com (pri: 10)`
SOA	1	`dns17.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns17.hichina.com, dns17.hichina.com, dns17.hichina.com...)

Analysis

IP Addresses

02521.com points to a single IP: 203.107.45.167.

Other host names, for instance cdatm.org, ceeha.com, livartz.com, tjace.cn and hn119.gov.cn share IP numbers with 02521.com.

Name Servers

Two name servers dns17.hichina.com and dns18.hichina.com handle delegation for 02521.com.

02521.com uses the same name server setup as other domains, for example genglijixie.com, zbjjf.com, onlineit.info, xmsme.com and xuqianghai.com.

02521.com partially shares name servers with other domains; examples include mismo.cn, edaeu.com, mhsz.cn, babypro.cn and 188a.com.

These name servers commonly accompany ns1.alidns.com, expirens3.hichina.com, expirens4.hichina.com and ns2.alidns.com.

Host names with nine IP numbers:

dns17.hichina.com points to: 2408:4009:501::25, 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.

dns18.hichina.com points to: 2408:4009:501::26, 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

02521.com is handled by a single mail server, mxdomain.qq.com.

02521.com has the same mail server setup as other domains, including ceerrep.com, limner.net, embdiy.com, hwpack.com and rootu.cn.

02521.com shares some mail servers with other domains, at least partially, such as lich.sh.cn, zerol.cn, aqjy.org, 61120.net and smc518.cn.

These mail servers are often used together with mxbiz1.qq.com and mxbiz2.qq.com.

02521.com - robtex.com

02521.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

`02521.com`

`com`