🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`contextschool.dev`

DNSSEC	⚠️ Not signed
A	216.150.1.1^{🇨🇦 Amazon216.150.1.0/24 EC2 Prefix}
A	216.150.16.193^{🇨🇦 Amazon216.150.16.0/24 EC2 Prefix}
NS	`ns1.vercel-dns.com` ⭐
		A	2620:4d:4000:6259:7:13:0:1^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`dns1.p13.nsone.net`
		A	198.51.44.13^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`dns1.p13.nsone.net`
NS	`ns2.vercel-dns.com`
		A	2a00:edc0:6259:7:13::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p13.nsone.net`
		A	198.51.45.13^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns2.p13.nsone.net`
SOA	`ns1.vercel-dns.com`hostmaster@nsone.net serial=1786335527

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

contextschool.dev

contextschool.xyz

contextschool.com

Similar names

schoolcontext.com

Previous names

Next names

DNS History

9 records (4 active, 5 former)

●NSns1.vercel-dns.com2026-10-15 → 2026-10-30 · 2 obs

● 2026-10-15 05:45:54
● 2026-10-30 01:13:40

●NSns2.vercel-dns.com2026-10-15 → 2026-10-30 · 2 obs

● 2026-10-15 05:45:54
● 2026-10-30 01:13:40

●A216.150.1.12026-10-17 → 2026-10-30 · 4 obs

○ 2026-10-15 05:45:54
● 2026-10-17 10:10:28
○ 2026-10-19 07:50:32
● 2026-10-30 01:13:40

○A216.150.1.1292026-10-15 → 2026-10-15 · 3 obs

● 2026-10-15 05:45:54
○ 2026-10-17 10:10:28
○ 2026-10-30 01:13:40

○A216.150.1.1932026-10-29 → 2026-10-29 · 3 obs

○ 2026-10-19 07:50:32
● 2026-10-29 22:53:52
○ 2026-10-30 01:13:40

○A216.150.1.652026-10-19 → 2026-10-19 · 4 obs

○ 2026-10-17 10:10:28
● 2026-10-19 07:50:32
○ 2026-10-29 22:53:52
○ 2026-10-30 01:13:40

○A216.150.16.12026-10-17 → 2026-10-17 · 4 obs

○ 2026-10-15 05:45:54
● 2026-10-17 10:10:28
○ 2026-10-29 22:53:52
○ 2026-10-30 01:13:40

●A216.150.16.1932026-10-29 → 2026-10-30 · 3 obs

○ 2026-10-19 07:50:32
● 2026-10-29 22:53:52
● 2026-10-30 01:13:40

○A216.150.16.652026-10-15 → 2026-10-15 · 3 obs

● 2026-10-15 05:45:54
○ 2026-10-17 10:10:28
○ 2026-10-30 01:13:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
contextschool.dev	ns2.vercel-dns.com, ns1.vercel-dns.com	-

✅ Authoritative Response

Server:198.51.44.13

NS records: ns2.vercel-dns.com, ns1.vercel-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contextschool.dev (unsigned zone)

⏱️ Timing

Total: 1030ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`216.150.1.129, 216.150.1.65`
NS	2	`ns1.vercel-dns.com, ns2.vercel-dns.com`
SOA	1	`ns1.vercel-dns.com hostmaster.nsone.net`

Analysis

IP Addresses

contextschool.dev resolves to the IP addresses 216.150.1.1 and 216.150.16.193

unifyleads.com, chiefoshq.com, laboro.nyc plus two other host names have IP numbers in common with contextschool.dev.

Name Servers

contextschool.dev uses two name servers for its delegation: ns1.vercel-dns.com and ns2.vercel-dns.com.

The name server configuration of contextschool.dev is shared with other domains, for instance behzadtabari.com, scanfox.app, charlesonyeabor.com and two others.

contextschool.dev shares at least some of its name servers with domains including ijsnow.me, rolando.io and artunfolded.com

The two host names ns1.vercel-dns.com and ns2.vercel-dns.com each have a pair of IP addresses: ns1.vercel-dns.com has 198.51.44.13 and 2620:4d:4000:6259:7:13:0:1, and ns2.vercel-dns.com has 198.51.45.13 and 2a00:edc0:6259:7:13::2.

contextschool.dev - robtex.com