mail.sys-01.com - robtex.com

mail.sys-01.com

DNSSEC⚠️ Not signed
A202.172.26.37🇯🇵 DRNET202.172.24.0/21
PTRm36.coreserver.jp

sys-01.com

DNSSEC⚠️ Not signed
A202.172.26.37🇯🇵 DRNET202.172.24.0/21
NSns11.value-domain.com ⭐ ⚠️ Not in parent delegation
NSns1.value-domain.com ⚠️ Not in zone NS records
NSns12.value-domain.com ⚠️ Not in zone NS records
NSns13.value-domain.com ⚠️ Not in zone NS records
NSns2.value-domain.com ⚠️ Not in parent delegation
MXsys-01.com ⭐
TXTv=spf1 ip4:202.172.26.37 include:mxr.valueserver.jp ~all
SOAns1.value-domain.comhostmaster@sys-01.com 2025-07-09 #13

Previously MX for

sys-01.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A202.172.26.37159.253.0.110
○A159.253.0.1102015-06-04 → 2016-07-01 · 4 obs
● 2015-06-04 21:58:48
● 2016-07-01 09:22:16
○ 2026-02-28 07:41:34
○ 2026-03-27 18:58:22
●A202.172.26.372026-02-28 → 2026-03-27 · 3 obs
○ 2016-07-01 09:22:16
● 2026-02-28 07:41:34
● 2026-03-27 18:58:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net...-
sys-01.comns11.value-domain.com, ns12.value-domain.com, ns13.value-domain.com3 records

✅ Authoritative Response

Server:172.64.53.86

NS records: ns11.value-domain.com, ns12.value-domain.com, ns13.value-domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sys-01.com (unsigned zone)

⏱️ Timing

Total: 443ms | Queries: -

📄 Records

TypeCountSample Data
A1202.172.26.37

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (ns11.value-domain.com, ns12.value-domain.com, ns13.value-domain.com)

Analysis

IP Addresses

mail.sys-01.com resolves to a single IP: 202.172.26.37.

Other host names, for instance mail.turtlesystem.com, mail.sky4.net, hostmaster.tridentworks.net, food.pro-jpn.net and hobby7.net share IP numbers with mail.sys-01.com.