us.illinois.net - robtex.com

us.illinois.net

DNSSEC⚠️ Not signed
A66.99.142.47🇺🇸 ILLINOIS-CENTURY-NETWORK66.99.128.0/18 ICN
PTRus.illinois.net
NSns1.illinois.net ⭐ ⚠️ Not in parent delegation
A2001:1848:0:9300::4🇺🇸 ILLINOIS-CENTURY-NETWORK2001:1848::/32 State of IL CMS
PTRns1.illinois.net
A206.166.61.22🇺🇸 ILLINOIS-CENTURY-NETWORK206.166.0.0/18 ICN
PTRns1.illinois.net
NSns.illinois.net ⚠️ Not in parent delegation
NSns2.illinois.net ⚠️ Not in parent delegation
A206.166.17.200🇺🇸 ILLINOIS-CENTURY-NETWORK206.166.0.0/18 ICN
PTRns2.illinois.net
MXus.illinois.net ⭐
A66.99.142.47🇺🇸 ILLINOIS-CENTURY-NETWORK66.99.128.0/18 ICN
PTRus.illinois.net
SOAns.illinois.nethostmaster@illinois.net 2010-02-17 #0

illinois.net

DNSSEC⚠️ Not signed
A216.124.54.83🇺🇸 ILLINOIS-CENTURY-NETWORK216.124.52.0/22
NSns1.illinois.net ⭐
NSns2.illinois.net
TXTv=spf1 ptr -all
SOAns1.illinois.netdoit@icn.hostmasternet.illinois.gov 2026-03-11 #0
WOT: UNKNOWN (76/100)
WOT: SAFE (60/100)
📈 Tranco rank: #28,098

PTR for

47.142.99.66.in-addr.arpa

NS for

kankakee.k12.il.us
mchenry.k12.il.us
jackson.il.us
kendall.k12.il.us
clarendon-hills.il.us
madison.k12.il.us
sangamon.k12.il.us
logan.il.us
will.k12.il.us
rchlnd.k12.il.us
wayne.k12.il.us
crwfrd.k12.il.us
macoupin.k12.il.us
morgan.k12.il.us
lee.k12.il.us
effingham.il.us
putnam.k12.il.us
ford.k12.il.us
douglas.il.us
lake.k12.il.us
efingham.k12.il.us
edgar.k12.il.us
stark.k12.il.us
lake.il.us
henry.k12.il.us
jasper.k12.il.us
rock-island.il.us
vermilion.il.us
galltn.k12.il.us
macon.k12.il.us
coles.k12.il.us
lib.il.us
gen.il.us
w-cook.k12.il.us
stclair.k12.il.us
henderson.k12.il.us
logan.k12.il.us
tec.il.us
knox.il.us
champaign.il.us
cook.k12.il.us
hamltn.k12.il.us
kankakee.il.us
christian.k12.il.us
fayette.k12.il.us
mclean.k12.il.us
sangamon.il.us
grundy.k12.il.us
dekalb.k12.il.us
glenview.il.us
mus.il.us
lasall.k12.il.us
edwrds.k12.il.us
wabash.k12.il.us
calhoun.k12.il.us
oak-lawn.il.us
massac.k12.il.us
macon.il.us
wilmsn.k12.il.us
schuyler.k12.il.us
lawrnc.k12.il.us
pvt.k12.il.us
johnsn.k12.il.us
peoria.k12.il.us
scott.k12.il.us
st-clair.il.us
n-cook.k12.il.us
pike.il.us
white.k12.il.us
dewitt.k12.il.us
tazewell.k12.il.us
dupage.k12.il.us
coles.il.us
saline.k12.il.us
marion.k12.il.us
winbgo.k12.il.us
champaign.k12.il.us
clay.k12.il.us
ogle.k12.il.us
moultrie.k12.il.us
wside.k12.il.us
clinton.k12.il.us
cc.il.us
adams.il.us
mchenry.il.us
monroe.k12.il.us
mcdonough.k12.il.us
kendall.il.us
s-cook.k12.il.us
knox.k12.il.us
jacksn.k12.il.us
hancock.il.us
randolph.k12.il.us
marshl.k12.il.us
k12.il.us
madison.il.us
stephenson.il.us
winnebago.il.us
brown.k12.il.us
pulski.k12.il.us

Previously NS for

jersey.il.us
www.dupage.k12.il.us
www.kane.k12.il.us
iroquois.k12.il.us
richland.il.us

MX for

us.illinois.net

Same first word

us.by
us.group
us.id
us.no
us.live
us.edu.mx
us.dk
us.inc
us.cx
us.st
us.nl
us.events
us.guru
us.hisamitsu
us.dev
us.zone
us.co
us.flights
us.s3-website-ap-northeast-1.amazonaws.com
us.s3-website.us-east-2.amazonaws.com
us.taxi
us.builders
us.productions
us.watch
us.fyi
us.hl.cn
us.luxury
us.academy
us.je
us.bank
us.net
us.s3-website.eu-central-1.amazonaws.com
us.fr
us.kg
us.tt
us.dj
us.s3-website-ap-southeast-1.amazonaws.com
us.tn
us.zip
us.cr
us.ai
us.s3-website-eu-west-1.amazonaws.com
us.com.ua
us.education
us.mk
us.s3-website-us-east-1.amazonaws.com
us.cisco
us.gs
us.gy
us.ly
us.al
us.com.au
us.io
us.s3-website-us-west-1.amazonaws.com
us.edu.pl
us.barclays
us.akamaiedge.net
us.ac.kr
us.abbott
us.uz
us.com.sa
us.ac
us.ee
us.world
us.cc
us.edu
us.ae
us.at
us.ngrok.io
us.af
us.email
us.global.prod.fastly.net
us.s3-website-us-west-2.amazonaws.com
us.uy
us.lv
us.s3-website.ap-northeast-1.amazonaws.com
us.new
us.com.ph
us.deals
us.dns-cloud.net
us.ski
us.casino
us.katowice.pl
us.pe
us.gov
us.gen.tr
us.info
us.com.tr
us.ua
us.exchange
us.s3.amazonaws.com
us.edu.vn
us.si
us.marketing
us.s3-website.ca-central-1.amazonaws.com
us.su
us.app
us.org
us.eu.org
us.hm
us
us.life
us.photos
us.fit
us.neustar
us.es
us.fo
us.cz
us.domains
us.ci
us.biz
us.nu
us.ph
us.tm
us.to
us.gd
us.edu.kg
us.ht
us.ca
us.lidl
us.akamai.net
us.uk
us.be
us.loans
us.cafe
us.se
us.org.uk
us.tv
us.barclaycard
us.post
us.ws
us.esq
us.vc
us.com.eg
us.works
us.sv
us.edgesuite.net
us.glass
us.ma
us.tf
us.org.ua
us.jobs
us.de
us.servername.us
us.nf
us.kz
us.pl
us.is
us.com
us.av.tr
us.lt
us.edu.cv
us.republican
us.bike
us.media

Similar names

su.digital
su.edu.om
su.org.za
su.ac.th
su.mt
su.de
su.vc
su.gz.cn
su.my
su.com
su.in.th
su.chat
su.net.nz
su.edu.eg
su.net
su.id.lv
su.cz
su.oz.au
su.cx
su.network
su.ac.kr
su.noip.us
su.ink
su.ac.za
su.baby
su.ac.rs
su.co.za
su.cc
su.edu.ly
su.co.kr
su.sg
su.hu
su.nl
su.no
su.edu.ph
su.domains
su.ph
su.by
su.gallery
su.is
su.fr
su.sd

DNS History

5 records (5 active, 0 former)

20162017201820192020202120222023202420252026NSns.illinois.netns1.illinois.netns2.illinois.netMXus.illinois.netA66.99.142.47
●NSns.illinois.net2015-08-12 → 2026-07-28 · 5 obs
● 2015-08-12 11:56:46
● 2026-06-11 02:20:04
○ 2026-06-11 02:55:52
● 2026-06-11 03:40:14
● 2026-07-28 14:00:12
●NSns1.illinois.net2015-11-03 → 2026-07-28 · 6 obs
○ 2015-08-12 11:56:46
● 2015-11-03 15:25:08
● 2026-06-11 02:20:04
○ 2026-06-11 02:55:52
● 2026-06-11 03:40:14
● 2026-07-28 14:00:12
●NSns2.illinois.net2015-11-03 → 2026-07-28 · 6 obs
○ 2015-08-12 11:56:46
● 2015-11-03 15:25:08
● 2026-06-11 02:20:04
○ 2026-06-11 02:55:52
● 2026-06-11 03:40:14
● 2026-07-28 14:00:12
●MXus.illinois.net2015-08-12 → 2026-07-28 · 5 obs
● 2015-08-12 11:56:46
● 2026-06-11 02:20:04
○ 2026-06-11 02:55:52
● 2026-06-11 03:40:14
● 2026-07-28 14:00:12
●A66.99.142.472015-08-12 → 2026-07-28 · 8 obs
● 2015-08-12 11:56:46
● 2026-05-29 06:39:10
○ 2026-05-29 07:24:14
● 2026-05-29 09:03:10
● 2026-06-11 02:20:04
○ 2026-06-11 02:55:52
● 2026-06-11 03:40:14
● 2026-07-28 14:00:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
neth.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net...-
illinois.netns2.illinois.net, ns1.illinois.net2 records

✅ Authoritative Response

Server:206.166.17.200

NS records: ns2.illinois.net, ns1.illinois.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for illinois.net (unsigned zone)

⏱️ Timing

Total: 349ms | Queries: -

📄 Records

TypeCountSample Data
A166.99.142.47
NS3ns2.illinois.net, ns.illinois.net...
MX1us.illinois.net (pri: 5)
SOA1ns.illinois.net hostmaster.illinois.net

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (ns2.illinois.net, ns1.illinois.net)

Analysis

Name Server Role

As a name server, us.illinois.net handles DNS authority for kankakee.k12.il.us, mchenry.k12.il.us, jackson.il.us, kendall.k12.il.us, clarendon-hills.il.us and hundreds of other domains.

us1.illinois.net and us2.illinois.net frequently appear as name servers alongside us.illinois.net.

Mail Server Role

The MX record for us.illinois.net points back to us.illinois.net — it is its own mail server.

IP Addresses

us.illinois.net directs to one IP number, which is 66.99.142.47.

Name Servers

us.illinois.net is served by three name servers: ns1.illinois.net, ns2.illinois.net and ns.illinois.net.

us.illinois.net shares at least some of its name servers with other domains, including cpsboe.com, 163.107.64.in-addr.arpa, 82.158.66.in-addr.arpa and two others.

These name servers are routinely co-deployed with the name servers dns.illinois.net, ns.cps.k12.il.us, ns2.cps.k12.il.us and two others.

Hosts with two IP numbers each:

The A records for ns1.illinois.net return 206.166.61.22 and 2001:1848:0:9300::4.

Hosts that resolve to one IP address:

ns2.illinois.net resolves to the IP address 206.166.17.200.

Mail Servers

The MX record for us.illinois.net points to a single mail server: us.illinois.net.

us.illinois.net resolves to 66.99.142.47 and no other IP number.