mail.cos-sun.com - robtex.com

mail.cos-sun.com

DNSSEC⚠️ Not signed
A203.137.113.234🇯🇵 IDC203.137.112.0/21 Frontier Inc.

cos-sun.com

DNSSEC⚠️ Not signed
A52.198.228.5🇯🇵 Amazon52.196.0.0/14 EC2 NRT prefix
NSns1.value-domain.com ⭐
NSns2.value-domain.com
NSns3.value-domain.com ⚠️ Not in zone NS records
NSns4.value-domain.com ⚠️ Not in zone NS records
NSns5.value-domain.com ⚠️ Not in zone NS records
MXmail.cos-sun.com ⭐
TXTv=spf1 ip4:203.137.113.234 ~all
TXTgoogle-site-verification=2OoalR1cq4oHKmJWivt4W4nmb1yRquzPl5O7wErsOJ0
SOAns1.value-domain.comhostmaster@cos-sun.com 2024-01-04 #11
📈 Tranco rank: #765,445

MX for

cos-sun.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A203.137.113.234211.1.233.220
●A203.137.113.2342026-02-27 → 2026-05-11 · 3 obs
○ 2016-04-17 11:01:24
● 2026-02-27 22:14:30
● 2026-05-11 15:42:10
○A211.1.233.2202015-06-13 → 2016-04-17 · 4 obs
● 2015-06-13 14:26:06
● 2016-04-17 11:01:24
○ 2026-02-27 22:14:30
○ 2026-05-11 15:42:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cos-sun.comns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com...5 records

✅ Authoritative Response

Server:172.64.53.3

NS records: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com, ns4.value-domain.com, ns5.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cos-sun.com (unsigned zone)

⏱️ Timing

Total: 611ms | Queries: -

📄 Records

TypeCountSample Data
A1203.137.113.234

📌 Glue Records Collected

Total: 5

Out-of-bailiwick: 5 (ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com...)

Analysis

Mail Server Role

mail.cos-sun.com serves as the mail server for cos-sun.com.

IP Addresses

mail.cos-sun.com points to an IP address: 203.137.113.234.

other host names include mail.westkawaguchi.com, mail.s-raspberry.com, mail.shinagawa-esthe.jp, mail.shinbashi-esthe.jp and mail.cin-m.jp; they share IP numbers with mail.cos-sun.com.