DNSWHOIS.INFO - mail.is4u.com

Search for IP or hostnames:

mail.is4u.com checked at 2025-10-22T10:00:02.756Z 342ms 101/101/101 100% R:17

`mail.is4u.com`

CNAME	`is4u.com`
MX	`mail.is4u.com`
MX	`mail.r4u.com`
NS	`curitiba.ns.porkbun.com`
		A	2400:cb00:2049:1::adf5:3a25 ^{🇺🇸 Cloudflare}
		A	173.245.58.37^{🇺🇸 Cloudflare}
NS	`fortaleza.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:88c ^{🇺🇸 Cloudflare}
		A	162.159.8.140^Cloudflare
NS	`maceio.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:bb4 ^{🇺🇸 Cloudflare}
		A	162.159.11.180^Cloudflare
NS	`salvador.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:a96 ^{🇺🇸 Cloudflare}
		A	162.159.10.150^Cloudflare
A	2605:6400:20:13f6::1 ^{🇺🇸 FRANTECH}
		PTR	`star.is4u.com`
A	205.185.122.163^{🇺🇸 FRANTECH}
		PTR	`star.is4u.com`

`is4u.com`

	MX	`mail.is4u.com`
	MX	`mail.r4u.com`
	NS	`curitiba.ns.porkbun.com`
	NS	`fortaleza.ns.porkbun.com`
	NS	`maceio.ns.porkbun.com`
	NS	`salvador.ns.porkbun.com`
	A	2605:6400:20:13f6::1 ^{🇺🇸 FRANTECH}
	A	205.185.122.163^{🇺🇸 FRANTECH}

MX for

ns1.is4u.com

r4u.com

star.r4u.com

ns2.is4u.com

is4u.com

star.is4u.com

server2.is4u.com

server1.is4u.com

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AI analysis

mail.is4u.com serves as a mail server for ns1.is4u.com, r4u.com, star.r4u.com, ns2.is4u.com, is4u.com and a few other domains.

For mail handling, mail.r4u.com serves as a mail server together with mail.is4u.com.

mail.is4u.com points to two IP numbers: 2605:6400:20:13f6::1 and 205.185.122.163.

Other host names, for instance server2.is4u.com, server1.is4u.com, ns1.is4u.com, ns2.is4u.com and is4u.com share IP numbers with mail.is4u.com.

mail.is4u.com is delegated to four name servers: curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com, maceio.ns.porkbun.com and salvador.ns.porkbun.com.

mail.is4u.com at least partially shares name servers with other domains, for instance gnow.co, centrodeformacioncontinua.com, dryanovski.com, thatquis.org and provadore.com.

Host names with two IP numbers:

curitiba.ns.porkbun.com points to: 2400:cb00:2049:1::adf5:3a25 and 173.245.58.37.

fortaleza.ns.porkbun.com points to: 2400:cb00:2049:1::a29f:88c and 162.159.8.140.

maceio.ns.porkbun.com points to: 2400:cb00:2049:1::a29f:bb4 and 162.159.11.180.

salvador.ns.porkbun.com points to: 2400:cb00:2049:1::a29f:a96 and 162.159.10.150.

Two mail servers handle mail.is4u.com: mail.is4u.com and mail.r4u.com.

mail.is4u.com uses the same mail server configuration as other domains, such as ns1.is4u.com, r4u.com, star.r4u.com, ns2.is4u.com and is4u.com.

dbq