`mx21.au.com`

DNSSEC	⚠️ Not signed
A	111.96.117.211^{🇯🇵 KDDI111.96.0.0/16}
		PTR	`mx02.au.com`

`au.com`

	DNSSEC	⚠️ Not signed
	A	2001:268:fa03:500:175:129:0:108^{🇯🇵 KDDI2001:268::/32}
	A	175.129.0.108^{🇯🇵 KDDI175.129.0.0/16}
	NS	`dns103.kddi.ne.jp` ⭐
	NS	`dns104.kddi.ne.jp`
	NS	`dnsa01.kddi.ne.jp`
	NS	`dnsa02.kddi.ne.jp`
	MX	`mx03.au.com` ⭐
	MX	`mx05.au.com` ⭐
	MX	`mx11.au.com` ⭐
	MX	`mx12.au.com` ⭐
	MX	`mx13.au.com` ⭐
	MX	`mx14.au.com` ⭐
	MX	`mx21.au.com` ⭐
	MX	`mx22.au.com` ⭐
	MX	`mx23.au.com` ⭐
	MX	`mx24.au.com` ⭐
	MX	`mx31.au.com` ⭐
	MX	`mx32.au.com` ⭐
	MX	`mx41.au.com` ⭐
	MX	`mx42.au.com` ⭐
	MX	`mx43.au.com` ⭐
	MX	`mx44.au.com` ⭐
	TXT	`v=spf1 include:spf-msg.au.com include:spf-nao.ezweb.ne.jp include:spf-az.ezwe...`
	TXT	`_q4bt6hn4w4if9b8ulnocf859fx8yhjj`
	TXT	`c0lq1l6y7xsj3mk71bg4vdrt1w68s0s8`
	TXT	`facebook-domain-verification=mroapooxpo8mbwuajmzynp8ni6g32m`
	TXT	`google-site-verification=tWk10LY-wUsS3rhdu-DKdHDIG08gcEPQaCQJRlU91wg`
	SOA	`dns103.kddi.ne.jp`postmaster@kddi.com 2026-04-07 #0

WOT: SAFE (60/100)
rank #4970 globally
rank #2490 in the tld
WOT: SAFE (62/100)
📈 Tranco rank: #4,443

MX for

ezweb.ne.jp

au.com

Same first word

mx21.net

Similar names

21xm.com

21mx.de

12mx.cn

21xm.cn

1mx2.com

mx12.com

x12m.com

DNS History

1 record (1 active, 0 former)

●A111.96.117.2112026-03-04 → 2026-04-12 · 2 obs

● 2026-03-04 01:06:36
● 2026-04-12 07:03:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
au.com	dns103.kddi.ne.jp, dns104.kddi.ne.jp, dnsa01.kddi.ne.jp, dnsa02.kddi.ne.jp	-

✅ Authoritative Response

Server:111.87.4.97

NS records: dns103.kddi.ne.jp, dns104.kddi.ne.jp, dnsa01.kddi.ne.jp, dnsa02.kddi.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for au.com (unsigned zone)

⏱️ Timing

Total: 926ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`111.96.117.211`

Analysis

Mail Server Role

mx21.au.com serves as the mail server for ezweb.ne.jp and au.com.

mx03.au.com, mx05.au.com and mx11.au.com are commonly used as mail servers together with mx21.au.com.

IP Addresses

mx21.au.com points to a single IP number: 111.96.117.211.

Other host names such as mx41.au.com and mx02.au.com share IP numbers with mx21.au.com.

mx21.au.com - robtex.com

mx21.au.com

au.com