tk-tsukuba.com - robtex.com

tk-tsukuba.com

DNSSEC⚠️ Not signed
A60.43.237.87🇯🇵 OCN60.32.0.0/12 (AS4713) CIDR BLOCK 70 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN
PTRtk-tsukuba.com
NSmwns1.customer.ne.jp ⭐
A210.150.23.210🇯🇵 InfoSphere210.150.0.0/16 INFOSPHERE
NSmwns2.customer.ne.jp
A202.17.152.183🇯🇵 InfoSphere202.17.128.0/19 INFOSPHERE
MXmwbgw1.ocn.ad.jp ⭐
A210.145.253.233🇯🇵 OCN210.145.0.0/16 (AS4713) CIDR BLOCK 18 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN
MXmwbgw2.ocn.ad.jp ⭐
A210.145.253.234🇯🇵 OCN210.145.0.0/16 (AS4713) CIDR BLOCK 18 NTT Communications Corporation 1-1-6 Uchisaiwai-cho, Chiyoda-ku Tokyo 100-8019 JAPAN
TXTv=spf1 a include:_spf.bizmw.com ~all
SOAmwns1.customer.ne.jphost-plan-ac@ntt.com serial=1613508331

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=1776974116

PTR for

87.237.43.60.in-addr.arpa

Same first word

tk-tsukuba.com

DNS History

13 records (5 active, 8 former)

20162017201820192020202120222023202420252026NSmwns1.customer.ne.jpmwns2.customer.ne.jpns-207.dns.jp-e1.cloudn-service.comns-208.dns.jp-w1.cloudn-service.comns-209.dns.us-e1.cloudn-service.comns1.secure.netns2.secure.netMXmwbgw1.ocn.ad.jpmwbgw2.ocn.ad.jpin.sjc.mx.trendmicro.comA60.43.237.87153.254.52.4261.126.36.79
●NSmwns1.customer.ne.jp2026-04-07 → 2026-04-23 · 3 obs
○ 2019-02-02 23:58:48
● 2026-04-07 03:12:00
● 2026-04-23 20:09:02
●NSmwns2.customer.ne.jp2026-04-07 → 2026-04-23 · 3 obs
○ 2019-02-02 23:58:48
● 2026-04-07 03:12:00
● 2026-04-23 20:09:02
○NSns-207.dns.jp-e1.cloudn-service.com2016-01-17 → 2019-02-02 · 5 obs
○ 2015-10-24 17:23:30
● 2016-01-17 14:15:48
● 2019-02-02 23:58:48
○ 2026-04-07 03:12:00
○ 2026-04-23 20:09:02
○NSns-208.dns.jp-w1.cloudn-service.com2016-01-17 → 2019-02-02 · 5 obs
○ 2015-10-24 17:23:30
● 2016-01-17 14:15:48
● 2019-02-02 23:58:48
○ 2026-04-07 03:12:00
○ 2026-04-23 20:09:02
○NSns-209.dns.us-e1.cloudn-service.com2016-01-17 → 2019-02-02 · 5 obs
○ 2015-10-24 17:23:30
● 2016-01-17 14:15:48
● 2019-02-02 23:58:48
○ 2026-04-07 03:12:00
○ 2026-04-23 20:09:02
○NSns1.secure.net2015-07-03 → 2015-10-24 · 4 obs
● 2015-07-03 02:03:00
● 2015-10-24 17:23:30
○ 2016-01-17 14:15:48
○ 2026-04-23 20:09:02
○NSns2.secure.net2015-07-03 → 2015-10-24 · 4 obs
● 2015-07-03 02:03:00
● 2015-10-24 17:23:30
○ 2016-01-17 14:15:48
○ 2026-04-23 20:09:02
○MXin.sjc.mx.trendmicro.com2015-07-03 → 2015-10-24 · 4 obs
● 2015-07-03 02:03:00
● 2015-10-24 17:23:30
○ 2016-01-17 14:15:48
○ 2026-04-23 20:09:02
●MXmwbgw1.ocn.ad.jp2016-01-17 → 2026-04-23 · 3 obs
○ 2015-10-24 17:23:30
● 2016-01-17 14:15:48
● 2026-04-23 20:09:02
●MXmwbgw2.ocn.ad.jp2016-01-17 → 2026-04-23 · 3 obs
○ 2015-10-24 17:23:30
● 2016-01-17 14:15:48
● 2026-04-23 20:09:02
○A153.254.52.422015-07-03 → 2015-10-24 · 4 obs
● 2015-07-03 02:03:00
● 2015-10-24 17:23:30
○ 2016-01-17 14:15:48
○ 2026-04-23 20:09:02
●A60.43.237.872026-04-07 → 2026-04-23 · 3 obs
○ 2019-02-02 23:58:48
● 2026-04-07 03:12:00
● 2026-04-23 20:09:02
○A61.126.36.792016-01-17 → 2019-02-02 · 5 obs
○ 2015-10-24 17:23:30
● 2016-01-17 14:15:48
● 2019-02-02 23:58:48
○ 2026-04-07 03:12:00
○ 2026-04-23 20:09:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
tk-tsukuba.commwns1.customer.ne.jp, mwns2.customer.ne.jp-

✅ Authoritative Response

Server:210.150.23.210

NS records: mwns1.customer.ne.jp, mwns2.customer.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tk-tsukuba.com (unsigned zone)

⏱️ Timing

Total: 1226ms | Queries: -

📄 Records

TypeCountSample Data
A160.43.237.87
NS2mwns1.customer.ne.jp, mwns2.customer.ne.jp
MX2mwbgw1.ocn.ad.jp (pri: 10), mwbgw2.ocn.ad.jp (pri: 10)
TXT1v=spf1 a include:_spf.bizmw.com ~all
SOA1mwns1.customer.ne.jp host-plan-ac.ntt.co

Analysis

IP Addresses

tk-tsukuba.com points to IP number: 60.43.237.87.

Name Servers

tk-tsukuba.com is delegated to two name servers: mwns1.customer.ne.jp and mwns2.customer.ne.jp.

tk-tsukuba.com shares the same name server setup as 40.112.61.in-addr.arpa, chuotravel.co.jp, talknet.jp, oyamada-group.jp and inc-mtec.jp.

Host names with a single IP:

mwns1.customer.ne.jp points to 210.150.23.210.

mwns2.customer.ne.jp points to 202.17.152.183.

Mail Servers

tk-tsukuba.com is handled by two mail servers: mwbgw1.ocn.ad.jp and mwbgw2.ocn.ad.jp.

The mail server setup for tk-tsukuba.com matches that of other domains, for instance fujieng.ecnet.jp, kan-sei.com, n-kc.co.jp, kitamurabolt.com and k-t-horitsu.jimusho.jp.

tk-tsukuba.com shares some mail servers with other domains, for instance tobusports.co.jp, taisei-yakuhin.co.jp and tobuws.co.jp.

Host names with a single IP:

mwbgw1.ocn.ad.jp points to 210.145.253.233.

mwbgw2.ocn.ad.jp points to 210.145.253.234.