`king51.com`

DNSSEC	⚠️ Not signed
A	47.97.122.251^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`dns15.hichina.com` ⭐ ⚠️ Not in parent delegation
		A	2408:4009:501::23^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-42.defastlink.net`
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-52.defastlink.net`
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-202.defastlink.net`
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-212.defastlink.net`
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-42.defastlink.net`
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-52.defastlink.net`
		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,}
			PTR	`ip-139-224-142-112.defastlink.net`
		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,}
			PTR	`ip-139-224-142-122.defastlink.net`
NS	`dns16.hichina.com` ⚠️ Not in parent delegation
		A	2408:4009:501::24^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-41.defastlink.net`
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-51.defastlink.net`
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-201.defastlink.net`
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-211.defastlink.net`
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-41.defastlink.net`
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-51.defastlink.net`
		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,}
			PTR	`ip-139-224-142-111.defastlink.net`
		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,}
			PTR	`ip-139-224-142-121.defastlink.net`
NS	`ns1.alidns.com` ⚠️ Not in zone NS records
		A	2408:4009:501::1^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.45^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-45.defastlink.net`
		A	39.96.153.55^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-55.defastlink.net`
		A	47.118.199.205^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-205.defastlink.net`
		A	47.118.199.215^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-215.defastlink.net`
		A	120.76.107.45^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-45.defastlink.net`
		A	120.76.107.55^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-55.defastlink.net`
		A	139.224.142.115^{🇨🇳 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-139-224-142-115.defastlink.net`
		A	139.224.142.125^{🇨🇳 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-139-224-142-125.defastlink.net`
NS	`ns2.alidns.com` ⚠️ Not in zone NS records
		A	2408:4009:501::2^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.46^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-46.defastlink.net`
		A	39.96.153.56^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
			PTR	`ip-39-96-153-56.defastlink.net`
		A	47.118.199.206^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-206.defastlink.net`
		A	47.118.199.216^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
			PTR	`ip-47-118-199-216.defastlink.net`
		A	120.76.107.46^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-46.defastlink.net`
		A	120.76.107.56^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
			PTR	`ip-120-76-107-56.defastlink.net`
		A	139.224.142.116^{🇨🇳 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-139-224-142-116.defastlink.net`
		A	139.224.142.126^{🇨🇳 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-139-224-142-126.defastlink.net`
MX	`mxbiz1.qq.com` ⭐
		A	203.205.147.218^{🇭🇰 TENCENT-NET-AP-CN203.205.147.0/24 Proxy-registered route object}
		A	203.205.232.191^{🇭🇰 TENCENT-NET-AP-CN203.205.232.0/23 Proxy-registered route object}
MX	`mxbiz2.qq.com`⁽¹⁰⁾
		A	203.205.232.191^{🇭🇰 TENCENT-NET-AP-CN203.205.232.0/23 Proxy-registered route object}
TXT	`v=spf1 include:spf.mail.qq.com ~all`
TXT	`953929677-13817482`
SOA	`dns15.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=1771291435

Subdomains

books-img2.king51.com

Same first word

king51.com.cn

king51.com

Similar names

king15.com

51king.com

DNS History

15 records (7 active, 8 former)

●NSdns15.hichina.com2017-05-20 → 2026-03-13 · 3 obs

○ 2016-07-14 18:51:50
● 2017-05-20 06:21:22
● 2026-03-13 19:50:36

●NSdns16.hichina.com2017-05-20 → 2026-03-13 · 3 obs

○ 2016-07-14 18:51:50
● 2017-05-20 06:21:22
● 2026-03-13 19:50:36

○NSf1g1ns1.dnspod.net2015-06-17 → 2015-11-07 · 4 obs

● 2015-06-17 23:36:34
● 2015-11-07 01:21:14
○ 2016-01-26 03:09:44
○ 2026-03-13 19:50:36

○NSf1g1ns2.dnspod.net2015-06-17 → 2015-11-07 · 4 obs

● 2015-06-17 23:36:34
● 2015-11-07 01:21:14
○ 2016-01-26 03:09:44
○ 2026-03-13 19:50:36

●NSns1.alidns.com2016-01-26 → 2026-03-13 · 7 obs

○ 2015-11-07 01:21:14
● 2016-01-26 03:09:44
● 2016-07-14 18:51:50
○ 2017-05-20 06:21:22
○ 2019-02-01 02:49:38
● 2026-02-28 08:02:42
● 2026-03-13 19:50:36

●NSns2.alidns.com2016-01-26 → 2026-03-13 · 7 obs

○ 2015-11-07 01:21:14
● 2016-01-26 03:09:44
● 2016-07-14 18:51:50
○ 2017-05-20 06:21:22
○ 2019-02-01 02:49:38
● 2026-02-28 08:02:42
● 2026-03-13 19:50:36

●MXmxbiz1.qq.com2026-02-28 → 2026-03-13 · 3 obs

○ 2019-02-01 02:49:38
● 2026-02-28 08:02:42
● 2026-03-13 19:50:36

●MXmxbiz2.qq.com2026-02-28 → 2026-03-13 · 3 obs

○ 2019-02-01 02:49:38
● 2026-02-28 08:02:42
● 2026-03-13 19:50:36

○MXmxdomain.qq.com2015-06-17 → 2019-02-01 · 4 obs

● 2015-06-17 23:36:34
● 2019-02-01 02:49:38
○ 2026-02-28 08:02:42
○ 2026-03-13 19:50:36

○A115.28.144.1712015-06-17 → 2015-06-17 · 3 obs

● 2015-06-17 23:36:34
○ 2017-05-20 06:21:22
○ 2026-03-13 19:50:36

○A118.190.33.2082018-02-11 → 2018-07-01 · 5 obs

○ 2017-07-25 04:42:12
● 2018-02-11 03:42:04
● 2018-07-01 09:44:46
○ 2018-10-11 01:29:50
○ 2026-03-13 19:50:36

○A121.42.159.532015-11-07 → 2017-07-25 · 5 obs

○ 2015-06-17 23:36:34
● 2015-11-07 01:21:14
● 2017-07-25 04:42:12
○ 2018-02-11 03:42:04
○ 2026-03-13 19:50:36

○A47.105.118.1882018-12-26 → 2019-02-01 · 5 obs

○ 2018-10-11 01:29:50
● 2018-12-26 05:46:52
● 2019-02-01 02:49:38
○ 2026-02-28 08:02:42
○ 2026-03-13 19:50:36

○A47.105.62.1822018-10-11 → 2018-10-11 · 4 obs

○ 2018-07-01 09:44:46
● 2018-10-11 01:29:50
○ 2018-12-26 05:46:52
○ 2026-03-13 19:50:36

●A47.97.122.2512026-02-28 → 2026-03-13 · 3 obs

○ 2019-02-01 02:49:38
● 2026-02-28 08:02:42
● 2026-03-13 19:50:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
king51.com	ns1.alidns.com, ns2.alidns.com	18 records

✅ Authoritative Response

Server: 120.76.107.45

NS records: ns1.alidns.com, ns2.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for king51.com (unsigned zone)

⏱️ Timing

Total: 3738ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.97.122.251`
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
TXT	2	`953929677-13817482, 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 (ns1.alidns.com, ns1.alidns.com, ns1.alidns.com...)

Analysis

Hierarchy

king51.com is the parent of books-img2.king51.com.

IP Addresses

king51.com resolves to one IP number: 47.97.122.251.

Name Servers

king51.com is delegated to four name servers: ns1.alidns.com, ns2.alidns.com, dns15.hichina.com and dns16.hichina.com.

king51.com at least partially shares name servers with other domains, for instance ls-tec.com.cn, dyxdz.com, sarns.net, hdsec.cn and sjzbirds.cn.

these name servers are often used together with expirens3.hichina.com, expirens4.hichina.com, dns13.hichina.com and dns14.hichina.com.

Host names with nine IP numbers:

ns1.alidns.com points to: 2408:4009:501::1, 39.96.153.45, 39.96.153.55, 47.118.199.205, 47.118.199.215, 120.76.107.45, 120.76.107.55, 139.224.142.115 and 139.224.142.125.

ns2.alidns.com points to: 2408:4009:501::2, 39.96.153.46, 39.96.153.56, 47.118.199.206, 47.118.199.216, 120.76.107.46, 120.76.107.56, 139.224.142.116 and 139.224.142.126.

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 king51.com: mxbiz1.qq.com and mxbiz2.qq.com.

king51.com shares the same mail server setup as other domains, for instance elfegg.com, insobo.com, ios222.com, evkchina.com and ailitrip.com.

king51.com shares at least some mail servers with other domains, including wapjet.cm.cm, ecloverlife.com, boryi.com and yuchengtang.com.cn.

Host names with two IP numbers: mxbiz1.qq.com points to 203.205.147.218 and 203.205.232.191.

Host names with one IP number: mxbiz2.qq.com points to 203.205.232.191.

Host names that point to 203.205.232.191: mxbiz1.qq.com and mxbiz2.qq.com.

king51.com - robtex.com

king51.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`king51.com`

`com`