`sp.cambiumtech.com`

	DNSSEC	⚠️ Not signed
	A	12.233.124.174^{🇺🇸 AS701812.128.0.0/9 12/8 upper half}

`cambiumtech.com`

	DNSSEC	⚠️ Not signed
	A	12.233.124.185^{🇺🇸 AS701812.128.0.0/9 12/8 upper half}
	NS	`ns1.cambiumlearning.com` ⭐
	NS	`ns2.cambiumlearning.com`
	MX	`us-smtp-inbound-1.mimecast.com` ⭐
	MX	`us-smtp-inbound-2.mimecast.com` ⭐
	TXT	`v=spf1 include:cambiumlearning.com include:us._netblocks.mimecast.com ~all`
	TXT	`MS=ms55311014`
	SOA	`ns1.cambiumlearning.com`hostmaster@cambiumlearning.com 2025-08-13 #1

Subdomains

open.sp.cambiumtech.com

mail2337.sp.cambiumtech.com

Same first word

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🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net...	-
cambiumtech.com	ns1.cambiumlearning.com, ns2.cambiumlearning.com	2 records

✅ Authoritative Response

Server:66.248.224.140

NS records: ns1.cambiumlearning.com, ns2.cambiumlearning.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cambiumtech.com (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`12.233.124.174`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.cambiumlearning.com, ns2.cambiumlearning.com)

Analysis

Hierarchy

sp.cambiumtech.com is parent of open.sp.cambiumtech.com and mail2337.sp.cambiumtech.com.

IP Addresses

sp.cambiumtech.com points to a single IP: 12.233.124.174.

Other host names, for instance readingaz.com, sitesforteachers.com, curriculuma2z.com, learning-page.com and www.readingaz.com share IP numbers with sp.cambiumtech.com.

sp.cambiumtech.com - robtex.com