rubyprep.app - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`rubyprep.app`

DNSSEC	🔒 Signed (DS record present)
A	216.198.79.1^{🇺🇸 Amazon216.198.79.0/24 EC2 Prefix}
NS	`nsa1.squarespacedns.com` ⭐
		A	216.239.32.106^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-a1.googledomains.com`
NS	`nsa2.squarespacedns.com`
		A	216.239.34.106^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-a2.googledomains.com`
NS	`nsa3.squarespacedns.com`
		A	216.239.36.106^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-a3.googledomains.com`
NS	`nsa4.squarespacedns.com`
		A	216.239.38.106^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-a4.googledomains.com`
MX	`mx1.improvmx.com` ⭐
		A	2a05:d012:412:e201:88aa:e7b9:7a43:12d7^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e202:f36:2c1f:1a49:d38a^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e203:373a:f51a:4a85:1d25^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	13.37.195.136^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-37-195-136.eu-west-3.compute.amazonaws.com`
		A	15.236.236.160^{🇫🇷 Amazon15.236.0.0/15 EC2 CDG prefix}
			PTR	`ec2-15-236-236-160.eu-west-3.compute.amazonaws.com`
		A	35.181.18.45^{🇫🇷 Amazon35.181.0.0/16 EC2 CDG prefix}
			PTR	`ec2-35-181-18-45.eu-west-3.compute.amazonaws.com`
MX	`mx2.improvmx.com` ⭐
		A	2a05:d012:412:e201:1f6e:f6e4:8fd7:4678^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e202:e81e:cc44:3b53:8a3d^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	2a05:d012:412:e203:7e33:3d9c:28d7:ee20^{🇫🇷 Amazon2a05:d012:400::/38 AMAZON AWS}
		A	13.36.107.63^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-36-107-63.eu-west-3.compute.amazonaws.com`
		A	13.36.222.39^{🇫🇷 Amazon13.36.0.0/14 EC2 CDG Prefix}
			PTR	`ec2-13-36-222-39.eu-west-3.compute.amazonaws.com`
		A	15.236.61.92^{🇫🇷 Amazon15.236.0.0/15 EC2 CDG prefix}
			PTR	`ec2-15-236-61-92.eu-west-3.compute.amazonaws.com`
TXT	`v=spf1 include:spf.improvmx.com ~all`
SOA	`nsa1.squarespacedns.com`cloud-dns-hostmaster@google.com serial=1

`app`

	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=101427

🔒 HSTS Preload (+subdomains)

Same first word

rubyprep.app

Previous names

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DNS History

7 records (7 active, 0 former)

●NSnsa1.squarespacedns.com2026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

●NSnsa2.squarespacedns.com2026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

●NSnsa3.squarespacedns.com2026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

●NSnsa4.squarespacedns.com2026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

●MXmx1.improvmx.com2026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

●MXmx2.improvmx.com2026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

●A216.198.79.12026-08-27 → 2026-08-31 · 2 obs

● 2026-08-27 14:46:10
● 2026-08-31 18:00:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	10 records
rubyprep.app	nsa2.squarespacedns.com, nsa4.squarespacedns.com, nsa3.squarespacedns.com, nsa1.squarespacedns.com	-

✅ Authoritative Response

Server:216.239.34.106

NS records: nsa2.squarespacedns.com, nsa4.squarespacedns.com, nsa3.squarespacedns.com, nsa1.squarespacedns.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 967ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.198.79.1`
NS	4	`nsa1.squarespacedns.com, nsa2.squarespacedns.com...`
MX	2	`mx2.improvmx.com (pri: 10), mx1.improvmx.com (pri: 10)`
TXT	1	`v=spf1 include:spf.improvmx.com ~all`
SOA	1	`nsa1.squarespacedns.com cloud-dns-hostma`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

rubyprep.app has exactly one IP address — 216.198.79.1.

elvergel.com.mx, fithub.pro.br, okiemrekrutera.pl plus two other host names have IP numbers in common with rubyprep.app.

Name Servers

Four name servers handle the delegation for rubyprep.app: nsa1.squarespacedns.com, nsa2.squarespacedns.com, nsa3.squarespacedns.com and nsa4.squarespacedns.com.

The name servers of rubyprep.app overlap at least partially with those of other domains — among them hishiya014129.com, arkacoachingstudio.studio, techhorizons.solutions and two more.

Four host names, each with one IP address: nsa1.squarespacedns.com has 216.239.32.106, nsa2.squarespacedns.com has 216.239.34.106, nsa3.squarespacedns.com has 216.239.36.106 and nsa4.squarespacedns.com has 216.239.38.106.

Mail Servers

rubyprep.app uses two mail servers, mx1.improvmx.com and mx2.improvmx.com.

The mail server setup of rubyprep.app matches that of other domains such as cyberdoro.com, campsitetext.com, tradeinn.ca and two others.

The mail servers for rubyprep.app overlap at least partially with those of other domains, including derryadd.com and joehajek.co.uk.

Hosts with 6 IP addresses each:

mx1.improvmx.com maps to 13.37.195.136, 15.236.236.160, 35.181.18.45 and 3 additional IP addresses.

mx2.improvmx.com maps to 13.36.107.63, 13.36.222.39, 15.236.61.92 and 3 additional IP addresses.