`ostriver.z721.com`

DNSSEC	⚠️ Not signed
A	2001:2c0:100:425:52:cafe:4ba:1^{🇯🇵 InfoSphere2001:2c0::/35 INFOSPHERE}
		PTR	`2001-02c0-0100-0425-0052-cafe-04ba-0001.indigo.static.arena.ne.jp`
A	160.248.92.3^{🇯🇵 InfoSphere160.248.92.0/22 INFOSPHERE}

`z721.com`

	DNSSEC	⚠️ Not signed
	A	2001:2c0:100:425:52:cafe:4ba:1^{🇯🇵 InfoSphere2001:2c0::/35 INFOSPHERE}
	A	160.248.92.3^{🇯🇵 InfoSphere160.248.92.0/22 INFOSPHERE}
	NS	`curitiba.ns.porkbun.com` ⭐
	NS	`fortaleza.ns.porkbun.com`
	NS	`maceio.ns.porkbun.com`
	NS	`salvador.ns.porkbun.com`
	MX	`ostriver.z721.com` ⭐
	TXT	`v=spf1 redirect=spf.z721.com`
	SOA	`curitiba.ns.porkbun.com`dns@cloudflare.com serial=2387126453

MX for

readmej.com

zone721.com

z721.com

Similar names

DNS History

2 records (2 active, 0 former)

●A160.248.92.32026-02-16 → 2026-03-23 · 2 obs

● 2026-02-16 11:34:46
● 2026-03-23 20:26:42

●A2001:2c0:100:425:52:cafe:4ba:12026-02-16 → 2026-03-23 · 2 obs

● 2026-02-16 11:34:46
● 2026-03-23 20:26:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, h.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net...	-
z721.com	maceio.ns.porkbun.com, salvador.ns.porkbun.com, fortaleza.ns.porkbun.com, curitiba.ns.porkbun.com	8 records

✅ Authoritative Response

Server:173.245.58.37

NS records: maceio.ns.porkbun.com, salvador.ns.porkbun.com, fortaleza.ns.porkbun.com, curitiba.ns.porkbun.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for z721.com (unsigned zone)

⏱️ Timing

Total: 127ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`160.248.92.3`
AAAA	1	`2001:2c0:100:425:52:cafe:4ba:1`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (maceio.ns.porkbun.com, maceio.ns.porkbun.com, salvador.ns.porkbun.com...)

Analysis

Mail Server Role

ostriver.z721.com serves as the mail server for readmej.com, zone721.com and z721.com.

IP Addresses

ostriver.z721.com points to two IP numbers: 2001:2c0:100:425:52:cafe:4ba:1 and 160.248.92.3.

Other host names such as ostriver.ex.epro.co.jp, m00m.org, readmej.com, zone721.com and z721.com share IPs with ostriver.z721.com.

ostriver.z721.com - robtex.com