`bestcour.com`

DNSSEC	⚠️ Not signed
A	154.83.230.214^{🇺🇸 OWGELS-AS-AP154.83.224.0/20 AresIDC Limited}
NS	`a4.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}
			PTR	`ip-172-64-53-25.defastlink.net`
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}
			PTR	`ip-172-64-53-25.defastlink.net`
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}
			PTR	`ip-172-64-52-239.defastlink.net`
NS	`b4.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}
			PTR	`ip-172-64-52-239.defastlink.net`
SOA	`a.share-dns.com`master@share-dns.com serial=1768463798

`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

Same first word

bestcour.com

Similar names

DNS History

9 records (5 active, 4 former)

●NSa.share-dns.com2026-03-20 → 2026-03-23 · 3 obs

○ 2016-01-27 20:08:50
● 2026-03-20 01:38:06
● 2026-03-23 23:30:58

●NSa4.share-dns.com2026-03-20 → 2026-03-23 · 3 obs

○ 2016-01-27 20:08:50
● 2026-03-20 01:38:06
● 2026-03-23 23:30:58

●NSb.share-dns.net2026-03-20 → 2026-03-23 · 3 obs

○ 2016-01-27 20:08:50
● 2026-03-20 01:38:06
● 2026-03-23 23:30:58

●NSb4.share-dns.net2026-03-20 → 2026-03-23 · 3 obs

○ 2016-01-27 20:08:50
● 2026-03-20 01:38:06
● 2026-03-23 23:30:58

○NSns1.parkingcrew.net2015-06-02 → 2015-10-22 · 4 obs

● 2015-06-02 20:30:58
● 2015-10-22 13:45:46
○ 2016-01-27 20:08:50
○ 2026-03-23 23:30:58

○NSns2.parkingcrew.net2015-06-02 → 2015-10-22 · 4 obs

● 2015-06-02 20:30:58
● 2015-10-22 13:45:46
○ 2016-01-27 20:08:50
○ 2026-03-23 23:30:58

○MXmail.h-email.net2015-06-02 → 2015-10-22 · 4 obs

● 2015-06-02 20:30:58
● 2015-10-22 13:45:46
○ 2016-01-27 20:08:50
○ 2026-03-23 23:30:58

●A154.83.230.2142026-03-20 → 2026-03-23 · 3 obs

○ 2016-01-27 20:08:50
● 2026-03-20 01:38:06
● 2026-03-23 23:30:58

○A185.53.177.72015-06-02 → 2015-10-22 · 4 obs

● 2015-06-02 20:30:58
● 2015-10-22 13:45:46
○ 2016-01-27 20:08:50
○ 2026-03-23 23:30:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
bestcour.com	b4.share-dns.net, a4.share-dns.com	1 record

✅ Authoritative Response

Server:172.64.53.25

NS records: b4.share-dns.net, a4.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bestcour.com (unsigned zone)

⏱️ Timing

Total: 322ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`154.83.230.214`
NS	2	`a.share-dns.com, b.share-dns.net`
SOA	1	`a.share-dns.com master.share-dns.com`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a4.share-dns.com)

Analysis

IP Addresses

bestcour.com resolves to a single IP address: 154.83.230.214.

Other host names, such as 52dckj.com and wuzhaizhaopin.com, share IP numbers with bestcour.com.

Name Servers

bestcour.com is delegated to four name servers: a4.share-dns.com, a.share-dns.com, b4.share-dns.net and b.share-dns.net.

bestcour.com at least partially shares name servers with other domains, including bjyt168.com, gameslin.com, 23avi.com, 10bo1111.com and yizlm.com.