`classbuilder.pearson.com.br`

	DNSSEC	⚠️ Not signed
	A	159.182.80.145^{🇺🇸 ENETWORKS128.0.0.0/2}

`pearson.com.br`

	DNSSEC	⚠️ Not signed
	A	159.182.80.90^{🇺🇸 ENETWORKS128.0.0.0/2}
	NS	`dns-amer-2.ptns.pearson.com` ⭐ ⚠️ Not in parent delegation
	NS	`dns-apac-1.ptns.pearson.com` ⚠️ Not in parent delegation
	NS	`dns-emea-1.ptns.pearson.com` ⚠️ Not in parent delegation
	NS	`ns1.pearson.com` ⚠️ Not in zone NS records
	NS	`ns2.pearson.com` ⚠️ Not in zone NS records
	MX	`mx.core.locaweb.com.br` ⭐
	MX	`mx.a.locaweb.com.br`⁽²⁰⁾
	MX	`mx.b.locaweb.com.br`⁽²⁰⁾
	MX	`mx.jk.locaweb.com.br`⁽²⁰⁾
	TXT	`google-site-verification=ITodxC9pbTJKyVFloXFGZXEv6cH0LV4Ch_nt2WY-ucE`
	TXT	`include:7960436.spf06.hubspotemail.net`
	TXT	`facebook-domain-verification=vy27rllr58gercjqe8y3t3batkwmcs`
	SOA	`dns-amer-2.ptns.pearson.com`gns-dnsoperations@pearson.com 2012-11-22 #64

WOT: SAFE (61/100)
rank #869041 globally
rank #6229 in the tld
WOT: SAFE (70/100)
📈 Tranco rank: #618,317

PTR for

25.80.182.159.in-addr.arpa

Same first word

classbuilder.com

classbuilder.net

Similar names

calsbuilders.com

DNS History

2 records (1 active, 1 former)

●A159.182.80.1452016-06-03 → 2026-03-24 · 3 obs

○ 2015-11-09 07:48:36
● 2016-06-03 11:06:54
● 2026-03-24 04:05:12

○A159.182.80.412015-01-24 → 2015-11-09 · 4 obs

● 2015-01-24 09:24:04
● 2015-11-09 07:48:36
○ 2016-06-03 11:06:54
○ 2026-03-24 04:05:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, b.dns.br, c.dns.br, d.dns.br...	-
pearson.com.br	ns1.pearson.com, ns2.pearson.com	-

✅ Authoritative Response

Server:168.146.112.11

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pearson.com.br (unsigned zone)

⏱️ Timing

Total: 899ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`159.182.80.145`

Analysis

IP Addresses

classbuilder.pearson.com.br points to a single IP address: 159.182.80.145.

classbuilder.pearson.com.br - robtex.com