`server.fhcusa.com`

DNSSEC	⚠️ Not signed
A	209.253.166.51^{🇺🇸 AS29922209.253.166.0/24}
		PTR	`server.fhcusa.com`

`fhcusa.com`

	DNSSEC	⚠️ Not signed
	A	13.92.90.175^{🇺🇸 Microsoft13.64.0.0/11 MICROSOFT}
	NS	`ns1.smtusa.com` ⭐
	NS	`ns.smtusa.com`
	MX	`fhcusa-com.p10.spamhero.com` ⭐
	MX	`fhcusa-com.p20.spamhero.net`⁽²⁰⁾
	MX	`fhcusa-com.p30.spamhero.net`⁽³⁰⁾
	MX	`server.fhcusa.com`⁽³⁵⁾
	MX	`fhcusa-com.p40.spamhero.net`⁽⁴⁰⁾
	TXT	`v=spf1 ip4:3.15.96.75 a mx ~all`
	SOA	`ns.smtusa.com`admin@smtusa.com 2017-03-23 #21

PTR for

51.166.253.209.in-addr.arpa

MX for

fhcusa.com

Same first word

server.ne.jp

server.gen.tr

server.agency

server.casa

server.work

server.in.ua

server.my

server.sg

server.org

server.nyc

server.s3.amazonaws.com

server.lu

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server.dyndns.tv

server.plus

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server.industries

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server.js.cn

server.as

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server.web.id

server.company

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server.promo

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server.ae

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server.ms

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server.services

server.fo

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server.fyi

server.ro

server.(0x706f726e)

server.sa

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server.com.ar

server.my.id

server.com.au

server.zone

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server.tl

server.com.pl

server.at

server.kharkov.ua

server.ind.in

server.me

server.id.lv

server.vn

server.si

server.ge

server.us

server.(0x787878)

server.com.sa

server.tc

server.lt

server.fm

server.exchange

server.kinghost.net

server.co.tz

server.solutions

server.pl

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revers.at

reserv.nl

server.no

server.deals

server.hu

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sverre.no

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server.app

server.ag

verres.be

revers.io

resver.com

server.pro

server.lv

server.cl

reserv.es

server.cc

server.idv.tw

reserv.company

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server.cafe

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server.ne.kr

revers.pro

erserv.net

ervers.com

revres.com

revers.art.pl

revers.ro

revers.org.pl

revers.de

reserv.it

ervers.net

verser.net

revers.net

reserv.ee

sverre.us

reserv.pl

reserv.org

resrve.com

reserv.jp

sverre.it

verser.com

reesrv.win

rveres.com

reserv.info

DNS History

2 records (1 active, 1 former)

○A205.232.55.492015-05-25 → 2016-12-22 · 4 obs

● 2015-05-25 12:16:04
● 2016-12-22 18:37:30
○ 2026-03-21 19:51:10
○ 2026-03-26 04:35:04

●A209.253.166.512026-03-21 → 2026-03-26 · 3 obs

○ 2016-12-22 18:37:30
● 2026-03-21 19:51:10
● 2026-03-26 04:35:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net...	-
fhcusa.com	ns.smtusa.com, ns1.smtusa.com	2 records

✅ Authoritative Response

Server:40.76.13.220

NS records: ns.smtusa.com, ns1.smtusa.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fhcusa.com (unsigned zone)

⏱️ Timing

Total: 295ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`209.253.166.51`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.smtusa.com, ns1.smtusa.com)

Analysis

Mail Server Role

server.fhcusa.com serves as the mail server for fhcusa.com.

fhcusa-com.p10.spamhero.com, fhcusa-com.p20.spamhero.net and fhcusa-com.p30.spamhero.net commonly serve as mail servers together with server.fhcusa.com.

IP Addresses

server.fhcusa.com points to a single IP: 209.253.166.51.

server.fhcusa.com - robtex.com