`mx13.dco.jp`

DNSSEC	⚠️ Not signed
A	133.18.181.191^{🇯🇵 KAGOYAJAPAN133.18.0.0/16 KAGOYA Japan Inc.}
		PTR	`v133-18-181-191.vir.kagoya.net`

`dco.jp`

	DNSSEC	⚠️ Not signed
	NS	`adi.ns.cloudflare.com` ⭐
	NS	`elijah.ns.cloudflare.com`
	MX	`mx12.dco.jp` ⭐
	MX	`mx11.dco.jp`⁽³⁾
	MX	`mx13.dco.jp`⁽³⁾
	TXT	`google-site-verification=Li5JsNuvsZ7CiA03Yeya9cBdAaatYOakT3wpcxvkjlk`
	TXT	`v=spf1 mx a:mx11.dco.jp ~all`
	SOA	`adi.ns.cloudflare.com`dns@cloudflare.com serial=2403157417

MX for

dco.jp

Same first word

mx13.com

mx13.eu

Similar names

13xm.cn

mx31.net

31xm.com

xm31.com

m13x.com

m3x1.cn

1m3x.icu

13xm.com

DNS History

1 record (1 active, 0 former)

●A133.18.181.1912026-04-30 → 2026-05-06 · 2 obs

● 2026-04-30 16:31:58
● 2026-05-06 11:39:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	e.dns.jp, c.dns.jp, g.dns.jp, a.dns.jp...	-
dco.jp	adi.ns.cloudflare.com, elijah.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.56

NS records: adi.ns.cloudflare.com, elijah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dco.jp (unsigned zone)

⏱️ Timing

Total: 737ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`133.18.181.191`

Analysis

Mail Server Role

mx13.dco.jp is the mail server for dco.jp.

Mail servers mx11.dco.jp and mx12.dco.jp are commonly used with mx13.dco.jp.

IP Addresses

mx13.dco.jp points to a single IP number: 133.18.181.191.

other host names for instance mx13.9mail.jp, mx13.1mile.jp, mx13.gwne.jp, mx13.twne.jp and mx13.15ne.jp share IP numbers with mx13.dco.jp.

mx13.dco.jp - robtex.com

mx13.dco.jp

dco.jp