understandable.dev - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`understandable.dev`

DNSSEC	⚠️ Not signed
A	75.2.60.5^{🇺🇸 Amazon75.2.60.0/24 Prod}
		PTR	`acd89244c803f7181.awsglobalaccelerator.com`
NS	`dns1.registrar-servers.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.registrar-servers.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.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`⁽²⁰⁾
		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.sendinblue.com mx ~all`
TXT	`Sendinblue-code:364f2f0371b6155383f55604ca429be8`
TXT	`google-site-verification=oZLCSgRwITOfoHTOlWNZCdxdf1BFuZf2LRiFLL3LcPo`
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1696572771

`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

Previous names

Next names

DNS History

5 records (5 active, 0 former)

●NSdns1.registrar-servers.com2026-08-29 → 2026-10-15 · 2 obs

● 2026-08-29 13:59:34
● 2026-10-15 04:20:24

●NSdns2.registrar-servers.com2026-08-29 → 2026-10-15 · 2 obs

● 2026-08-29 13:59:34
● 2026-10-15 04:20:24

●MXmx1.improvmx.com2026-08-29 → 2026-10-15 · 4 obs

● 2026-08-29 13:59:34
○ 2026-10-02 01:12:26
● 2026-10-02 08:43:16
● 2026-10-15 04:20:24

●MXmx2.improvmx.com2026-08-29 → 2026-10-15 · 4 obs

● 2026-08-29 13:59:34
○ 2026-10-02 01:12:26
● 2026-10-02 08:43:16
● 2026-10-15 04:20:24

●A75.2.60.52026-08-29 → 2026-10-15 · 4 obs

● 2026-08-29 13:59:34
○ 2026-10-02 01:12:26
● 2026-10-02 08:43:16
● 2026-10-15 04:20:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
understandable.dev	dns2.registrar-servers.com, dns1.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.133.200

NS records: dns2.registrar-servers.com, dns1.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for understandable.dev (unsigned zone)

⏱️ Timing

Total: 1639ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`75.2.60.5`
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
MX	2	`mx1.improvmx.com (pri: 10), mx2.improvmx.com (pri: 20)`
TXT	3	`v=spf1 include:spf.sendinblue.com mx ~al, Sendinblue-code:364f2f0371b6155383f55604...`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

Analysis

IP Addresses

understandable.dev resolves to one IP address: 75.2.60.5.

rinkcentral.com, tec3commerce.com.br, dcmarketinglab.com and two other host names share IP numbers with understandable.dev.

Name Servers

DNS delegation for understandable.dev points to two name servers: dns1.registrar-servers.com and dns2.registrar-servers.com.

understandable.dev uses the same name servers as several other domains — among them seaportsail.com, seniorslifestylecoach.com, sietepiezas.com and two more.

understandable.dev has a partial name server overlap with other domains — among them pedicabsunited.com and aztestosterone.com.

These name servers tend to appear together with the name servers dns4.registrar-servers.com, dns3.registrar-servers.com and dns5.registrar-servers.com.

dns1.registrar-servers.com directs to 156.154.132.200 and 2610:a1:1024::200. dns2.registrar-servers.com directs to 156.154.133.200 and 2610:a1:1025::200. Each host name carries two IP addresses.

Mail Servers

Mail for understandable.dev is handled by two mail servers — mx1.improvmx.com and mx2.improvmx.com.

understandable.dev uses an identical mail server configuration to several other domains — among them ggvpn.xyz, festdna.com, atabuadaamizade.com.br and two more.

understandable.dev has at least partial mail server overlap with other domains such as phoenixdoubleclose.com, fitfud.pl, farostoukosmou.gr and two more.

Hostnames that resolve to 6 IP addresses:

mx1.improvmx.com has IP addresses 13.37.195.136, 15.236.236.160 and 35.181.18.45, plus 3 other.

mx2.improvmx.com has IP addresses 13.36.107.63, 13.36.222.39 and 15.236.61.92, plus 3 other.