`courseteamwork.com`

DNSSEC	⚠️ Not signed
A	177.210.84.226^{🇧🇷 UNSPECIFIED160.0.0.0/3}
NS	`a12.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	`b12.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=1780842845

`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=1784135382

Subdomains

www.courseteamwork.com

Same first word

courseteamwork.com

DNS History

5 records (5 active, 0 former)

●NSa.share-dns.com2026-04-29 → 2026-07-15 · 2 obs

● 2026-04-29 10:28:14
● 2026-07-15 17:14:28

●NSa12.share-dns.com2026-04-29 → 2026-07-15 · 2 obs

● 2026-04-29 10:28:14
● 2026-07-15 17:14:28

●NSb.share-dns.net2026-04-29 → 2026-07-15 · 2 obs

● 2026-04-29 10:28:14
● 2026-07-15 17:14:28

●NSb12.share-dns.net2026-04-29 → 2026-07-15 · 2 obs

● 2026-04-29 10:28:14
● 2026-07-15 17:14:28

●A177.210.84.2262026-04-29 → 2026-07-15 · 2 obs

● 2026-04-29 10:28:14
● 2026-07-15 17:14:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, h.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net...	-
courseteamwork.com	b12.share-dns.net, a12.share-dns.com	1 record

✅ Authoritative Response

Server:172.64.53.25

NS records: b12.share-dns.net, a12.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseteamwork.com (unsigned zone)

⏱️ Timing

Total: 461ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`177.210.84.226`
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 (a12.share-dns.com)

Analysis

Hierarchy

courseteamwork.com serves as the parent of www.courseteamwork.com.

IP Addresses

courseteamwork.com resolves to one IP address: 177.210.84.226.

Host names like www.courseteamwork.com are further examples that share IP numbers with courseteamwork.com.

Name Servers

The authoritative name servers for courseteamwork.com are a12.share-dns.com, a.share-dns.com, b12.share-dns.net and b.share-dns.net.

courseteamwork.com has at least partial name server overlap with other domains, such as et80.com, wyjloveyl.com, main-9games.com and two others.

a2.share-dns.com, b2.share-dns.net and a5.share-dns.com — plus 7 other name servers — are commonly paired with these name servers.

Four host names each point to one IP address: a12.share-dns.com and a.share-dns.com both point to 172.64.53.25, and b12.share-dns.net and b.share-dns.net both point to 172.64.52.239.

a12.share-dns.com along with a.share-dns.com each resolve to 172.64.53.25 IP addresses.

b12.share-dns.net along with b.share-dns.net each resolve to 172.64.52.239 IP addresses.

courseteamwork.com - robtex.com