`mail.firstclassinc.com`

DNSSEC	⚠️ Not signed
A	75.145.142.228^{🇺🇸 COMCAST-IBONE75.144.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
		PTR	`75-145-142-228-illinois.hfc.comcastbusiness.net`

`firstclassinc.com`

	DNSSEC	⚠️ Not signed
	A	75.145.142.227^{🇺🇸 COMCAST-IBONE75.144.0.0/13 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054}
	NS	`ns55.domaincontrol.com` ⭐
	NS	`ns56.domaincontrol.com`
	MX	`mdc.firstclassinc.com` ⭐
	TXT	`_globalsign-domain-verification=rZPditX6BZjOGt31e-QSNTxV8S99YnEyLvbRxXtzUs`
	TXT	`v=spf1 ip4:104.182.132.242 ip4:23.125.108.104 ip4:23.125.108.99 mx -all`
	TXT	`_globalsign-domain-verification=BoGYPvFHaAUqMkn61MWC015oPpFVbCo4xBjpLB40BN`
	SOA	`ns55.domaincontrol.com`dns@jomax.net 2023-09-26 #0

WOT: SAFE (62/100)
WOT: SAFE (68/100)

PTR for

164.120.205.162.in-addr.arpa

Previously MX for

firstclassinc.com

Same first word

mail.net.hk

mail.as

mail.ir

mail.net.ru

mail.cz

mail.so

mail.ind.in

mail.com.in

mail.noip.us

mail.hippy.jp

mail.eating-organic.net

mail.ba.gov.br

mail.com

mail.inf.br

mail.4u.com

mail.edu.tw

mail.dnsalias.net

mail.pro.br

mail.ne.jp

mail.co.jp

mail.be

mail.com.vn

mail.how

mail.in-brb.de

mail.ro

mail.com.hk

mail.neustar

mail.ao

mail.pw

mail.broker

mail.school

mail.land

mail.yahoo

mail.edu.ge

mail.ps

mail.edu.ee

mail.gouv.ci

mail.gi

mail.fr

mail.mil.id

mail.k12.vt.us

mail.photos

mail.omg.lol

mail.ooo

mail.cloudaccess.net

mail.girly.jp

mail.ec

mail.blog

mail.potager.org

mail.v.ua

mail.copro.uk

mail.or.id

mail.kim

mail.md

mail.gov.ls

mail.edu.tt

mail.si

mail.gov.rw

mail.gov.bs

mail.ca

mail.je

mail.ks.ua

mail.org.br

mail.technology

mail.edu.ru

mail.edu.az

mail.global

mail.bambina.jp

mail.hu.net

mail.whitesnow.jp

mail.se

mail.keymachine.de

mail.gd

mail.ms.gov.br

mail.csx.cc

mail.basicserver.io

mail.coupons

mail.js.org

mail.ch

mail.partners

mail.mt

mail.golffan.us

mail.town

mail.sh

mail.nom.za

mail.com.br

mail.com.ph

mail.co.ua

mail.bike

mail.gr

mail.srv.br

mail.dyn-vpn.de

mail.serveminecraft.net

mail.gov.cn

mail.staba.jp

mail.pinoko.jp

mail.in.th

mail.tech

mail.rakkestad.no

mail.gov.bm

Similar names

lima.nu

mail.gl

mail.link

mail.no

ilma.pl

mail.net.vn

mail.lib.wy.us

lami.com.au

mail.pictures

ilma.org

mail.gov.kg

mail.ag

mail.hk

mail.win

mail.net

ilam.ph

amli.fi

ilma.wpmudev.host

mail.ne.kr

mail.support

ilam.org.tr

mail.de

mail.hacca.jp

mail.moo.jp

almi.ru

liam.nu

mail.new

amil.gal

imal.org.mx

mail.teva

mail.gov.al

mail.kapsi.fi

mail.cutegirl.jp

mali.com

mail.gov.az

mail.io

mail.cash

mail.eus

mail.firewall-gateway.com

mali.ru

amli.kommune.no

mlai.melbourne

mail.pro

mail.pupu.jp

mail.vivian.jp

mila.fi

mail.df.gov.br

mail.ci

mali.nl

mail.chirurgiens-dentistes.fr

mail.frenchkiss.jp

mail.blogspot.be

amli.fr

ilam.in

mail.go.kr

almi.odessa.ua

almi.mobi

mail.my-gateway.de

mail.wedding

mail.za.bz

lima.city

almi.shop

mail.to

mail.tf

iaml.org

mail.ba

almi.com.br

mail.lviv.ua

amil.cn

mail.ki

mali.at

mila.ca

liam.biz

mail.lima-city.de

mail.mysecuritycamera.com

mail.microsoft

mail.mil.tw

mail.org.in

mail.deals

lami.at

mila.quebec

amli.work

mail.edu.pl

ilma.lt

mail.cfolks.pl

mail.cm

mail.go.th

alim.biz

mail.mil.cn

mail.poivron.org

lami.com.co

mail.dnshome.de

mail.jp

mail.mp

mail.ac

mail.fund

lima.world

mail.edu.bi

almi.de

mail.uk.com

DNS History

3 records (1 active, 2 former)

○A162.205.120.1642016-09-08 → 2016-09-08 · 4 obs

○ 2016-03-21 21:29:26
● 2016-09-08 23:22:56
○ 2026-05-11 15:39:18
○ 2026-05-11 19:57:36

○A66.80.36.842015-08-17 → 2016-03-21 · 4 obs

● 2015-08-17 20:58:00
● 2016-03-21 21:29:26
○ 2016-09-08 23:22:56
○ 2026-05-11 19:57:36

●A75.145.142.2282026-05-11 → 2026-05-11 · 3 obs

○ 2016-09-08 23:22:56
● 2026-05-11 15:39:18
● 2026-05-11 19:57:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net...	-
firstclassinc.com	ns55.domaincontrol.com, ns56.domaincontrol.com	4 records

✅ Authoritative Response

Server:173.201.75.28

NS records: ns55.domaincontrol.com, ns56.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstclassinc.com (unsigned zone)

⏱️ Timing

Total: 512ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`75.145.142.228`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns55.domaincontrol.com, ns55.domaincontrol.com, ns56.domaincontrol.com...)

Analysis

IP Addresses

mail.firstclassinc.com resolves to a single IP address: 75.145.142.228.

Other host names, for instance mdc.firstclassinc.com, share IP numbers with mail.firstclassinc.com.

mail.firstclassinc.com - robtex.com