`51debug.com`

DNSSEC	⚠️ Not signed
A	47.83.242.23^{🇺🇸 Alibaba-Cloud47.83.128.0/17 Proxy-registered route object}
NS	`dns13.hichina.com` ⭐
		A	2408:4009:501::21^{🇨🇳 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	`dns14.hichina.com`
		A	2408:4009:501::22^{🇨🇳 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	`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	`dns13.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=1774744977

Same first word

51debug.com

51debug.cn

DNS History

16 records (6 active, 10 former)

●NSdns13.hichina.com2026-03-29 → 2026-03-29 · 2 obs

○ 2018-06-15 19:27:14
● 2026-03-29 01:02:32

●NSdns14.hichina.com2026-03-29 → 2026-03-29 · 2 obs

○ 2018-06-15 19:27:14
● 2026-03-29 01:02:32

○NSns1.ezdnscenter.com2015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSns2.ezdnscenter.com2015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSns3.ezdnscenter.com2015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSns4.ezdnscenter.com2015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSns5.ezdnscenter.com2015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSns6.ezdnscenter.com2015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSv1.dns234.net2018-06-15 → 2018-06-15 · 3 obs

○ 2017-01-01 17:11:58
● 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○NSv2.dns234.net2018-06-15 → 2018-06-15 · 3 obs

○ 2017-01-01 17:11:58
● 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

●MXmx1.qiye.aliyun.com2026-03-29 → 2026-03-29 · 1 obs

● 2026-03-29 01:02:32

●MXmx2.qiye.aliyun.com2026-03-29 → 2026-03-29 · 1 obs

● 2026-03-29 01:02:32

●MXmx3.qiye.aliyun.com2026-03-29 → 2026-03-29 · 1 obs

● 2026-03-29 01:02:32

○A114.80.156.1972015-07-21 → 2017-01-01 · 4 obs

● 2015-07-21 12:33:50
● 2017-01-01 17:11:58
○ 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

○A156.232.130.2512018-06-15 → 2018-06-15 · 3 obs

○ 2017-01-01 17:11:58
● 2018-06-15 19:27:14
○ 2026-03-29 01:02:32

●A47.83.242.232026-03-29 → 2026-03-29 · 2 obs

○ 2018-06-15 19:27:14
● 2026-03-29 01:02:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...	-
51debug.com	dns13.hichina.com, dns14.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns13.hichina.com, dns14.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51debug.com (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.83.242.23`
NS	2	`dns14.hichina.com, dns13.hichina.com`
MX	3	`mx3.qiye.aliyun.com (pri: 15), mx1.qiye.aliyun.com (pri: 5)...`
TXT	1	`v=spf1 include:spf.qiye.aliyun.com -all`
SOA	1	`dns13.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns13.hichina.com, dns13.hichina.com, dns13.hichina.com...)

Analysis

IP Addresses

51debug.com points to a single IP number: 47.83.242.23.

Name Servers

51debug.com is delegated to two name servers: dns13.hichina.com and dns14.hichina.com.

51debug.com shares the same name server setup as other domains, for example wlr.cn, gtlandplaza.com, memomeme.com, zajiben.com and emdoorftp.com.

51debug.com at least partially shares name servers with other domains, for instance jobei.com, airzone.cn, budgie.cn, feir.cn and rmobile.cn.

These name servers are commonly used with ns1.alidns.com, ns2.alidns.com, dns10.hichina.com and dns9.hichina.com.

Host names with nine IP numbers:

dns13.hichina.com points to: 2408:4009:501::21, 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.

dns14.hichina.com points to: 2408:4009:501::22, 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

51debug.com is handled by three mail servers: mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

51debug.com shares mail servers with other domains at least partially, including coolkit.cn, fastwan.com.cn, csbeyond.com, cnfc.com and cjry.cn.