core.simistry.net - robtex.com

core.simistry.net

DNSSEC⚠️ Not signed
A139.177.183.74🇩🇪 AKAMAI-LINODE-AP139.177.176.0/21 Akamai Technologies
PTRcore.simistry.net

simistry.net

DNSSEC⚠️ Not signed
A139.177.183.74🇩🇪 AKAMAI-LINODE-AP139.177.176.0/21 Akamai Technologies
NSleif.ns.cloudflare.com ⭐
NSnoor.ns.cloudflare.com
MXcore.simistry.net ⭐
TXTv=spf1 mx a -all
SOAleif.ns.cloudflare.comdns@cloudflare.com serial=2399656310

PTR for

74.183.177.139.in-addr.arpa

MX for

graduatemastery.com

Same first word

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DNS History

1 record (1 active, 0 former)

A139.177.183.74
●A139.177.183.742026-03-26 → 2026-03-26 · 2 obs
● 2026-03-26 04:33:04
● 2026-03-26 13:22:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
neta.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
simistry.netnoor.ns.cloudflare.com, leif.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.222

NS records: noor.ns.cloudflare.com, leif.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simistry.net (unsigned zone)

⏱️ Timing

Total: 564ms | Queries: -

📄 Records

TypeCountSample Data
A1139.177.183.74

Analysis

Mail Server Role

core.simistry.net serves as a mail server for graduatemastery.com.

IP Addresses

core.simistry.net resolves to one IP number: 139.177.183.74.