mail.firstyb.com - robtex.com

mail.firstyb.com

CNAMEd464a4bf.58a.net
CNAMEgbd7a00.cdn.58a.net
DNSSEC⚠️ Not signed
A158.94.172.111🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.112🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.113🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.114🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.115🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A185.34.144.177🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.178🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.179🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.180🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.181🇳🇱 CNSERVER-AP-AS185.34.144.0/22

firstyb.com

DNSSEC⚠️ Not signed
A158.94.172.111🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.112🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.113🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.114🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A158.94.172.115🇬🇧 CNSERVER-AP-AS158.94.172.0/23
A185.34.144.177🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.178🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.179🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.180🇳🇱 CNSERVER-AP-AS185.34.144.0/22
A185.34.144.181🇳🇱 CNSERVER-AP-AS185.34.144.0/22
NSlina.ns.cloudflare.com ⭐
NSsimon.ns.cloudflare.com
SOAlina.ns.cloudflare.comdns@cloudflare.com serial=2403245544

Previously MX for

firstyb.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A125.77.197.21CNAMEd464a4bf.58a.net
○A125.77.197.212015-07-24 → 2016-03-04 · 4 obs
● 2015-07-24 14:42:44
● 2016-03-04 17:38:30
○ 2016-07-05 17:11:42
○ 2026-05-12 20:23:08
●CNAMEd464a4bf.58a.net2026-05-12 → 2026-05-12 · 2 obs
● 2026-05-12 20:23:06
● 2026-05-12 20:23:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net...-
firstyb.comsimon.ns.cloudflare.com, lina.ns.cloudflare.com12 records

✅ Authoritative Response

Server:172.64.33.232

NS records: simon.ns.cloudflare.com, lina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstyb.com (unsigned zone)

⏱️ Timing

Total: 536ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1d464a4bf.58a.net

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (simon.ns.cloudflare.com, simon.ns.cloudflare.com, simon.ns.cloudflare.com...)

Analysis

IP Addresses

Ten IP numbers are pointed to by mail.firstyb.com: 158.94.172.111, 158.94.172.112, 158.94.172.113, 158.94.172.114, 158.94.172.115, 185.34.144.177, 185.34.144.178, 185.34.144.179, 185.34.144.180 and 185.34.144.181.

For instance, other host names 223ou.com, mkrmc.com, yunhaiaudio.com, zskunye.com and scldjs.com share IP numbers with mail.firstyb.com.