cos21.com - robtex.com

cos21.com

DNSSEC⚠️ Not signed
A85.131.210.57🇯🇵 XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv876.xbiz.ne.jp
NSns1.xbiz.ne.jp ⭐
A157.112.182.247🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
PTRns1.xbiz.ne.jp
NSns2.xbiz.ne.jp
A35.76.79.244🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix
PTRns2.xbiz.ne.jp
NSns3.xbiz.ne.jp
A157.112.191.237🇯🇵 XSERVER-AS157.112.184.0/21 XSERVER Inc.
PTRns3.xbiz.ne.jp
MXcos21.com ⭐
A85.131.210.57🇯🇵 XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv876.xbiz.ne.jp
TXTv=spf1 +a:sv876.xbiz.ne.jp +a:cos21.com +mx include:spf.sender.xserver.jp ~all
SOAns1.xbiz.ne.jproot@xbiz.ne.jp serial=0

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1776146717
WOT: UNKNOWN (62/100)

MX for

cos21.com

Subdomains

www.cos21.com

Same first word

cos21.com

Similar names

osc21.co.jp
21cos.com

DNS History

10 records (5 active, 5 former)

2008201020122014201620182020202220242026NSns1.xbiz.ne.jpns2.xbiz.ne.jpns3.xbiz.ne.jpns00.drive.ne.jpns01.drive.ne.jpMXcos21.commg.drive.ne.jpA85.131.210.57202.152.216.191202.152.219.127
○NSns00.drive.ne.jp2007-11-04 → 2018-06-30 · 4 obs
● 2007-11-04 08:43:28
● 2018-06-30 03:26:32
○ 2026-03-14 16:30:50
○ 2026-04-14 06:06:04
○NSns01.drive.ne.jp2007-11-04 → 2018-06-30 · 4 obs
● 2007-11-04 08:43:28
● 2018-06-30 03:26:32
○ 2026-03-14 16:30:50
○ 2026-04-14 06:06:04
●NSns1.xbiz.ne.jp2026-03-14 → 2026-04-14 · 3 obs
○ 2018-06-30 03:26:32
● 2026-03-14 16:30:50
● 2026-04-14 06:06:04
●NSns2.xbiz.ne.jp2026-03-14 → 2026-04-14 · 3 obs
○ 2018-06-30 03:26:32
● 2026-03-14 16:30:50
● 2026-04-14 06:06:04
●NSns3.xbiz.ne.jp2026-03-14 → 2026-04-14 · 3 obs
○ 2018-06-30 03:26:32
● 2026-03-14 16:30:50
● 2026-04-14 06:06:04
●MXcos21.com2026-03-14 → 2026-04-14 · 3 obs
○ 2018-06-30 03:26:32
● 2026-03-14 16:30:50
● 2026-04-14 06:06:04
○MXmg.drive.ne.jp2007-11-04 → 2018-06-30 · 4 obs
● 2007-11-04 08:43:28
● 2018-06-30 03:26:32
○ 2026-03-14 16:30:50
○ 2026-04-14 06:06:04
○A202.152.216.1912015-07-14 → 2018-06-30 · 5 obs
○ 2007-11-04 08:43:28
● 2015-07-14 06:33:32
● 2018-06-30 03:26:32
○ 2026-03-14 16:30:50
○ 2026-04-14 06:06:04
○A202.152.219.1272007-11-04 → 2007-11-04 · 3 obs
● 2007-11-04 08:43:28
○ 2015-07-14 06:33:32
○ 2026-04-14 06:06:04
●A85.131.210.572026-03-14 → 2026-04-14 · 3 obs
○ 2018-06-30 03:26:32
● 2026-03-14 16:30:50
● 2026-04-14 06:06:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cos21.comns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp-

✅ Authoritative Response

Server:157.112.182.247

NS records: ns1.xbiz.ne.jp, ns2.xbiz.ne.jp, ns3.xbiz.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cos21.com (unsigned zone)

⏱️ Timing

Total: 879ms | Queries: -

📄 Records

TypeCountSample Data
A185.131.210.57
NS3ns1.xbiz.ne.jp, ns3.xbiz.ne.jp...
MX1cos21.com (pri: 0)
TXT1v=spf1 +a:sv876.xbiz.ne.jp +a:cos21.com
SOA1ns1.xbiz.ne.jp root.xbiz.ne.jp

Analysis

Hierarchy

www.cos21.com has cos21.com as its parent.

Mail Server Role

The mail server for cos21.com is cos21.com.

IP Addresses

cos21.com maps to IP address 85.131.210.57.

Other host names, for instance www.cos21.com, www.ashikarada.jp, fujips.co.jp, 294.or.jp and spcc-j.org share IP numbers with cos21.com.

Name Servers

cos21.com is delegated to name servers ns1.xbiz.ne.jp, ns2.xbiz.ne.jp and ns3.xbiz.ne.jp.

cos21.com at least partially shares name servers with other domains such as belong.co.jp, port.maizuru.kyoto.jp, an-home.jp, snku.jp and melty-diet117.xyz.

Host names with a single IP:

ns1.xbiz.ne.jp points to 157.112.182.247

ns2.xbiz.ne.jp points to 35.76.79.244

ns3.xbiz.ne.jp points to 157.112.191.237

Mail Servers

One mail server serves cos21.com.

cos21.com points to one IP number: 85.131.210.57.