`api.preparaai.com.br`

DNSSEC	⚠️ Not signed
A	16.145.19.168^{🇺🇸 Amazon16.145.0.0/16}
		PTR	`ec2-16-145-19-168.us-west-2.compute.amazonaws.com`
A	52.38.185.107^{🇺🇸 Amazon52.36.0.0/14 EC2 PDX prefix}

`preparaai.com.br`

	DNSSEC	⚠️ Not signed
	A	18.161.34.19^{🇺🇸 Amazon18.161.32.0/21}
	A	18.161.34.27^{🇺🇸 Amazon18.161.32.0/21}
	A	18.161.34.42^{🇺🇸 Amazon18.161.32.0/21}
	A	18.161.34.102^{🇺🇸 Amazon18.161.32.0/21}
	NS	`ns-1363.awsdns-42.org` ⭐
	NS	`ns-1003.awsdns-61.net`
	NS	`ns-2018.awsdns-60.co.uk`
	NS	`ns-205.awsdns-25.com`
	TXT	`google-site-verification=RAXysyOIRM7CtdvHDg8jqbERH-_Cs1Hr5mR8vuWelUk`
	SOA	`ns-1363.awsdns-42.org`awsdns-hostmaster@amazon.com serial=1

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DNS History

4 records (2 active, 2 former)

●A16.145.19.1682026-04-24 → 2026-04-24 · 2 obs

○ 2026-02-18 23:51:48
● 2026-04-24 13:54:52

○A44.238.122.962026-02-18 → 2026-02-18 · 3 obs

● 2026-02-18 21:23:54
● 2026-02-18 23:51:48
○ 2026-04-24 13:54:52

○A44.246.105.52026-02-18 → 2026-02-18 · 3 obs

● 2026-02-18 21:23:54
● 2026-02-18 23:51:48
○ 2026-04-24 13:54:52

●A52.38.185.1072026-04-24 → 2026-04-24 · 2 obs

○ 2026-02-18 23:51:48
● 2026-04-24 13:54:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
br	a.dns.br, b.dns.br, c.dns.br, d.dns.br...	-
preparaai.com.br	ns-1363.awsdns-42.org, ns-2018.awsdns-60.co.uk, ns-205.awsdns-25.com, ns-1003.awsdns-61.net	-

✅ Authoritative Response

Server:205.251.195.235

NS records: ns-1363.awsdns-42.org, ns-2018.awsdns-60.co.uk, ns-205.awsdns-25.com, ns-1003.awsdns-61.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 563ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`52.38.185.107, 16.145.19.168`

Analysis

IP Addresses

api.preparaai.com.br resolves to two IP numbers: 16.145.19.168 and 52.38.185.107.

Other host names share IP numbers with api.preparaai.com.br; for instance ec2-52-38-185-107.us-west-2.compute.amazonaws.com.

api.preparaai.com.br - robtex.com