kts21c.com - robtex.com

kts21c.com

DNSSEC⚠️ Not signed
A182.16.229.132🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRalx02.atw.ne.jp
NSns0.atw.jp ⭐
A182.16.226.200🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRns0.atw.jp
NSns.dlsv.com ⚠️ Not in zone NS records
A210.236.247.71🇯🇵 IDC210.236.240.0/20 Frontier Inc.
NSns1.atw.jp ⚠️ Not in parent delegation
A210.236.247.71🇯🇵 IDC210.236.240.0/20 Frontier Inc.
NSns2.atw.jp ⚠️ Not in parent delegation
A219.99.220.242🇯🇵 NSK219.99.192.0/19 Co.,Ltd. 2-1,Minami-cho,Kanazawa-shi,Ishikawa,920-8769
PTRns2.atw.jp
NSns2.dlsv.com ⚠️ Not in zone NS records
A219.99.220.242🇯🇵 NSK219.99.192.0/19 Co.,Ltd. 2-1,Minami-cho,Kanazawa-shi,Ishikawa,920-8769
PTRns2.atw.jp
NSns3.atw.jp ⚠️ Not in parent delegation
A182.16.226.193🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRns3.atw.jp
NSns3.dlsv.com ⚠️ Not in zone NS records
A182.16.226.193🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRns3.atw.jp
MXsmtp.kts21c.com ⭐
A182.16.229.132🇯🇵 atworks182.16.224.0/21 A.T.WORKS,Inc. CIDR-block NO.2
PTRalx02.atw.ne.jp
TXTv=spf1 +ip4:182.16.229.132 ~all
TXTMS=ms22031379
SOAns0.atw.jphostmaster@atw.jp 2026-04-03 #3

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=1776132117

Subdomains

smtp.kts21c.com

Same first word

kts21c.com

Similar names

k12stc.com
tcsk12.us

DNS History

10 records (9 active, 1 former)

200920112013201520172019202120232025NSns.dlsv.comns0.atw.jpns1.atw.jpns2.atw.jpns2.dlsv.comns3.atw.jpns3.dlsv.comMXsmtp.kts21c.comA182.16.229.132203.183.28.87
●NSns.dlsv.com2015-05-12 → 2026-04-14 · 3 obs
○ 2008-03-19 21:34:52
● 2015-05-12 09:38:52
● 2026-04-14 02:11:18
●NSns0.atw.jp2026-02-27 → 2026-04-14 · 3 obs
○ 2015-05-12 09:38:52
● 2026-02-27 21:24:12
● 2026-04-14 02:11:18
●NSns1.atw.jp2026-02-27 → 2026-04-14 · 3 obs
○ 2015-05-12 09:38:52
● 2026-02-27 21:24:12
● 2026-04-14 02:11:18
●NSns2.atw.jp2026-02-27 → 2026-04-14 · 3 obs
○ 2015-05-12 09:38:52
● 2026-02-27 21:24:12
● 2026-04-14 02:11:18
●NSns2.dlsv.com2015-05-12 → 2026-04-14 · 3 obs
○ 2008-03-19 21:34:52
● 2015-05-12 09:38:52
● 2026-04-14 02:11:18
●NSns3.atw.jp2026-02-27 → 2026-04-14 · 3 obs
○ 2015-05-12 09:38:52
● 2026-02-27 21:24:12
● 2026-04-14 02:11:18
●NSns3.dlsv.com2015-05-12 → 2026-04-14 · 3 obs
○ 2008-03-19 21:34:52
● 2015-05-12 09:38:52
● 2026-04-14 02:11:18
●MXsmtp.kts21c.com2015-05-12 → 2026-04-14 · 3 obs
○ 2008-03-19 21:34:52
● 2015-05-12 09:38:52
● 2026-04-14 02:11:18
●A182.16.229.1322026-02-27 → 2026-04-14 · 3 obs
○ 2017-10-20 04:29:12
● 2026-02-27 21:24:12
● 2026-04-14 02:11:18
○A203.183.28.872015-05-12 → 2017-10-20 · 5 obs
○ 2008-03-19 21:34:52
● 2015-05-12 09:38:52
● 2017-10-20 04:29:12
○ 2026-02-27 21:24:12
○ 2026-04-14 02:11:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
kts21c.comns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com3 records

✅ Authoritative Response

Server:210.236.247.71

NS records: ns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kts21c.com (unsigned zone)

⏱️ Timing

Total: 418ms | Queries: -

📄 Records

TypeCountSample Data
A1182.16.229.132
NS3ns3.atw.jp, ns1.atw.jp...
MX1smtp.kts21c.com (pri: 10)
TXT2MS=ms22031379, v=spf1 +ip4:182.16.229.132 ~all
SOA1ns0.atw.jp hostmaster.atw.jp

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns3.dlsv.com, ns2.dlsv.com, ns.dlsv.com)

Analysis

Hierarchy

smtp.kts21c.com is a child of kts21c.com.

IP Addresses

kts21c.com resolves to one IP number: 182.16.229.132.

Other host names, for instance www.nagata-associates.com, smtp.ouei.com, www.tpi-japan.com, smtp.y-nishida.co.jp and smtp.snsoft.co.jp share IP numbers with kts21c.com.

Name Servers

kts21c.com is delegated to seven name servers: ns2.dlsv.com, ns3.dlsv.com, ns.dlsv.com, ns0.atw.jp, ns1.atw.jp, ns2.atw.jp and ns3.atw.jp.

kts21c.com at least partially shares name servers with other domains, including a-k.jp, space-graphics.co.jp, intercrest.co.jp, 220.99.219.in-addr.arpa and harimamental.com.

Host names with a single IP:

ns2.dlsv.com points to 219.99.220.242

ns3.dlsv.com points to 182.16.226.193

ns.dlsv.com points to 210.236.247.71

ns0.atw.jp points to 182.16.226.200

ns1.atw.jp points to 210.236.247.71

ns2.atw.jp points to 219.99.220.242

ns3.atw.jp points to 182.16.226.193

Host names pointing to 219.99.220.242: ns2.dlsv.com and ns2.atw.jp

Host names pointing to 182.16.226.193: ns3.dlsv.com and ns3.atw.jp

Host names pointing to 210.236.247.71: ns.dlsv.com and ns1.atw.jp

Mail Servers

A single mail server handles kts21c.com, smtp.kts21c.com.

Host name smtp.kts21c.com resolves to a single IP: 182.16.229.132.