offco.net - dns.ninja

`offco.net`

DNSSEC	⚠️ Not signed
A	153.122.205.21^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
NS	`offco.net` ⭐
		A	153.122.205.21^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
NS	`dnss10.so-net.ne.jp`
		A	210.139.255.1^{🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc.}
			PTR	`dnss10.so-net.ne.jp`
NS	`dnss11.so-net.ne.jp`
		A	210.139.255.17^{🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc.}
			PTR	`dnss11.so-net.ne.jp`
MX	`mx.offco.net` ⭐
		A	153.122.206.114^{🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.}
TXT	`v=spf1 include:_spf.shared-server.net +mx ~all`
SOA	`offco.net`hostmaster@offco.net serial=2602171610

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784823062

NS for

offco.net

Previously MX for

offco.net

Subdomains

mx.offco.net

Same first word

offco.net

offco.com.au

Similar names

ffoco.com

ofcfo.com

cooff.com

DNS History

8 records (5 active, 3 former)

●NSdnss10.so-net.ne.jp2015-07-15 → 2026-07-23 · 2 obs

● 2015-07-15 11:37:20
● 2026-07-23 16:30:24

●NSdnss11.so-net.ne.jp2015-07-15 → 2026-07-23 · 2 obs

● 2015-07-15 11:37:20
● 2026-07-23 16:30:24

●NSoffco.net2015-07-15 → 2026-07-23 · 2 obs

● 2015-07-15 11:37:20
● 2026-07-23 16:30:24

●MXmx.offco.net2015-12-09 → 2026-07-23 · 3 obs

○ 2015-07-15 11:37:20
● 2015-12-09 21:40:12
● 2026-07-23 16:30:24

○MXoffco.net2015-07-15 → 2015-07-15 · 3 obs

● 2015-07-15 11:37:20
○ 2015-12-09 21:40:12
○ 2026-07-23 16:30:24

○A124.40.19.112015-07-15 → 2015-07-15 · 3 obs

● 2015-07-15 11:37:20
○ 2015-12-09 21:40:12
○ 2026-07-23 16:30:24

●A153.122.205.212026-04-09 → 2026-07-23 · 3 obs

○ 2017-03-30 15:06:10
● 2026-04-09 10:37:46
● 2026-07-23 16:30:24

○A211.13.196.1432015-12-09 → 2017-03-30 · 5 obs

○ 2015-07-15 11:37:20
● 2015-12-09 21:40:12
● 2017-03-30 15:06:10
○ 2026-04-09 10:37:46
○ 2026-07-23 16:30:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
offco.net	dnss10.so-net.ne.jp, dnss11.so-net.ne.jp	-

✅ Authoritative Response

Server:210.139.255.1

NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for offco.net (unsigned zone)

⏱️ Timing

Total: 2442ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`153.122.205.21`
NS	2	`dnss10.so-net.ne.jp, dnss11.so-net.ne.jp`
MX	1	`mx.offco.net (pri: 10)`
TXT	1	`v=spf1 include:_spf.shared-server.net +m`
SOA	1	`offco.net hostmaster.offco.net`

Analysis

Hierarchy

mx.offco.net is delegated beneath offco.net.

Name Server Role

The NS records for offco.net point back to offco.net itself.

It is common to find dnss10.so-net.ne.jp and dnss11.so-net.ne.jp serving as name servers together with offco.net.

IP Addresses

offco.net resolves to just one IP address, 153.122.205.21.

Two other host names, along with n-koubou.co.jp, braininc.jp and kikuchi-masanori.com, also share IP numbers with offco.net.

Name Servers

The NS records for offco.net list three name servers: offco.net, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp.

There is at least partial name server overlap between offco.net and other domains — kanaya-tagsystem.com, athome204.org, showakonpo.jp and two more among them.

offco.net has IP address 153.122.205.21, dnss10.so-net.ne.jp has IP address 210.139.255.1 and dnss11.so-net.ne.jp has IP address 210.139.255.17 — one address each.

Mail Servers

The sole mail server for offco.net is mx.offco.net.

mx.offco.net resolves to 153.122.206.114 and no other IP number.