`server21.em-mobile.com`

DNSSEC	⚠️ Not signed
A	219.117.249.166^{🇯🇵 InfoSphere219.117.192.0/18 INTERLINK}
		PTR	`server21.em-mobile.com`

`em-mobile.com`

	DNSSEC	⚠️ Not signed
	A	210.48.238.60^{🇯🇵 InfoSphere210.48.224.0/19 INTERLINK}
	NS	`server06.em-mobile.com` ⭐
	NS	`server34.em-mobile.com`
	MX	`mail.em-mobile.com` ⭐
	TXT	`v=spf1 +ip4:192.168.0.1/24 +ip4:219.117.241.240/29 +ip4:210.48.238.48/28 +ip4...`
	SOA	`server06.em-mobile.com`webmaster@elementree.co.jp 2026-02-02 #2

PTR for

166.249.117.219.in-addr.arpa

Same first word

server21.org

server21.net

server21.eu

server21.com

server21.it

Similar names

server12.ru

server12.com

server12.de

21server.com

server12.xyz

server12.nl

DNS History

1 record (1 active, 0 former)

●A219.117.249.1662026-08-07 → 2026-08-07 · 2 obs

● 2026-08-07 03:31:22
● 2026-08-07 03:31:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
em-mobile.com	server06.em-mobile.com, server34.em-mobile.com	2 records

✅ Authoritative Response

Server:210.48.238.51

NS records: server06.em-mobile.com, server34.em-mobile.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for em-mobile.com (unsigned zone)

⏱️ Timing

Total: 582ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`219.117.249.166`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (server06.em-mobile.com, server34.em-mobile.com)

Analysis

IP Addresses

server21.em-mobile.com directs to one IP number, which is 219.117.249.166.

server21.em-mobile.com - robtex.com