`51elearning.com.cn`

DNSSEC	⚠️ Not signed
A	23.225.131.86^{🇺🇸 POWERLINE-HK23.225.128.0/21 Powerline Internal use}
NS	`a8.share-dns.com` ⭐ ⚠️ Not in parent delegation
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`a.share-dns.com` ⚠️ Not in zone NS records
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`b.share-dns.net` ⚠️ Not in zone NS records
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`b8.share-dns.net` ⚠️ Not in parent delegation
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`a.share-dns.com`master@share-dns.com serial=1776442359

`com.cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.cn` ⚠️ Not in parent delegation
	NS	`c.dns.cn` ⚠️ Not in parent delegation
	NS	`cns.cernet.net` ⚠️ Not in parent delegation
	NS	`d.dns.cn` ⚠️ Not in parent delegation
	NS	`e.dns.cn` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2030570357

WOT: NOT_SAFE (20/100)

Same first word

51elearning.com.cn

51elearning.org.cn

DNS History

8 records (5 active, 3 former)

●NSa.share-dns.com2026-05-14 → 2026-05-15 · 3 obs

○ 2020-03-11 18:09:34
● 2026-05-14 08:53:00
● 2026-05-15 18:13:30

●NSa8.share-dns.com2026-05-14 → 2026-05-15 · 3 obs

○ 2020-03-11 18:09:34
● 2026-05-14 08:53:00
● 2026-05-15 18:13:30

●NSb.share-dns.net2026-05-14 → 2026-05-15 · 3 obs

○ 2020-03-11 18:09:34
● 2026-05-14 08:53:00
● 2026-05-15 18:13:30

●NSb8.share-dns.net2026-05-14 → 2026-05-15 · 3 obs

○ 2020-03-11 18:09:34
● 2026-05-14 08:53:00
● 2026-05-15 18:13:30

○NSdns7.hichina.com2015-07-20 → 2020-03-11 · 4 obs

● 2015-07-20 12:42:08
● 2020-03-11 18:09:34
○ 2026-05-14 08:53:00
○ 2026-05-15 18:13:30

○NSdns8.hichina.com2015-07-20 → 2020-03-11 · 4 obs

● 2015-07-20 12:42:08
● 2020-03-11 18:09:34
○ 2026-05-14 08:53:00
○ 2026-05-15 18:13:30

○A211.153.23.532015-07-20 → 2020-03-11 · 4 obs

● 2015-07-20 12:42:08
● 2020-03-11 18:09:34
○ 2026-05-14 08:53:00
○ 2026-05-15 18:13:30

●A23.225.131.862026-05-14 → 2026-05-15 · 3 obs

○ 2020-03-11 18:09:34
● 2026-05-14 08:53:00
● 2026-05-15 18:13:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
51elearning.com.cn	a8.share-dns.com, b8.share-dns.net	-

✅ Authoritative Response

Server:172.64.53.25

NS records: a8.share-dns.com, b8.share-dns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51elearning.com.cn (unsigned zone)

⏱️ Timing

Total: 1726ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`23.225.131.86`
NS	2	`a.share-dns.com, b.share-dns.net`
SOA	1	`a.share-dns.com master.share-dns.com`

Analysis

IP Addresses

51elearning.com.cn resolves to a single IP: 23.225.131.86.

Name Servers

51elearning.com.cn is delegated to four name servers: a8.share-dns.com, a.share-dns.com, b8.share-dns.net and b.share-dns.net.

51elearning.com.cn shares some name servers with other domains, for example cnfinancing.com, whlfmf.com, agc799.com, movieposters24.com and cqxtsw.com.

these name servers are often used with a9.share-dns.com, b9.share-dns.net, a12.share-dns.com, b12.share-dns.net, a4.share-dns.com, b4.share-dns.net, a10.share-dns.com, b10.share-dns.net, a5.share-dns.com and b5.share-dns.net.

Host names with one IP:

a8.share-dns.com points to 172.64.53.25

a.share-dns.com points to 172.64.53.25

b8.share-dns.net points to 172.64.52.239

b.share-dns.net points to 172.64.52.239

Host names pointing to 172.64.53.25: a8.share-dns.com and a.share-dns.com

Host names pointing to 172.64.52.239: b8.share-dns.net and b.share-dns.net

51elearning.com.cn - robtex.com