1. All IP Ranges
  2. 66.0.0.0/8
  3. 66.99.0.0/16
  4. AS6325  | 66.99.0.0/18

66.99.0.0/18

AS6325  ·  Illinois Century Network

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Summary

Country United States
Domain illinois.gov
ASN AS6325
Parent Range 66.99.0.0/16
Registry ARIN
ID ICN7

WHOIS Details

NetHandle:      NET-66-99-0-0-1
OrgID:          ILTN
Parent:         NET-66-0-0-0-0
NetName:        ICN7
NetRange:       66.99.0.0 - 66.99.255.255
NetType:        allocation
RegDate:        2001-04-09
Updated:        2015-11-16
TechHandle:     ZI83-ARIN
Source:         ARIN


OrgID:          ILTN
OrgName:        Illinois Century Network
CanAllocate:    
Street:         120 W Jefferson
Street:         Suite B
City:           Springfield
State/Prov:     IL
Country:        US
PostalCode:     62702
RegDate:        1970-01-01
Updated:        2025-09-24
ReferralServer: rwhois://rwhois.illinois.net:4321
OrgAdminHandle: ZI83-ARIN
OrgTechHandle:  RESER5-ARIN
OrgTechHandle:  WEBST193-ARIN
OrgTechHandle:  ZI83-ARIN
OrgAbuseHandle: ICNAB-ARIN
Source:         ARIN


POCHandle:      ZI83-ARIN
IsRole:         Y
LastName:       Hostmaster
FirstName:      
Street:         120 W Jefferson
Street:         Suite B
City:           Springfield
State/Prov:     IL
Country:        US
PostalCode:     62702
RegDate:        2001-10-31
Updated:        2025-05-29
OfficePhone:    +1-815-936-4643
MobilePhone:    +1-779-801-4071
Mailbox:        DoIT.ICN.Hostmasternet@illinois.gov
Source:         ARIN


POCHandle:      ICNAB-ARIN
IsRole:         Y
LastName:       ICN Abuse
FirstName:      
Street:         120 W Jefferson
Street:         Suite B
City:           Springfield
State/Prov:     IL
Country:        US
PostalCode:     62702
RegDate:        2003-10-09
Updated:        2025-07-21
OfficePhone:    +1-217-524-3648
Mailbox:        doit.security@illinois.gov
Source:         ARIN


POCHandle:      WEBST193-ARIN
IsRole:         N
LastName:       Webster
FirstName:      Andrew
Street:         120 W Jefferson St
City:           Springfield
State/Prov:     IL
Country:        US
PostalCode:     62702
RegDate:        2025-07-21
Updated:        2025-07-21
OfficePhone:    +1-217-558-1106
Mailbox:        andy.webster@illinois.gov
Source:         ARIN


POCHandle:      RESER5-ARIN
IsRole:         N
LastName:       Reserva
FirstName:      Chuck
Street:         120 West Jefferson, Springfield, Illinois, 62702
City:           Springfield
State/Prov:     IL
Country:        US
PostalCode:     62702
RegDate:        2025-09-23
Updated:        2025-09-23
OfficePhone:    +1-217-786-8872
Mailbox:        chuck.reserva@illinois.gov
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 66.99.0.0/18

Range ASN Company Num of IPs
66.99.0.0/16 AS6325 Illinois Century Network 65,536

BGP prefixes that are contained by 66.99.0.0/18

Range ASN Company Num of IPs
66.99.5.0/24 AS19480 HAROLD WASHINGTON LIBRARY CENTER 256

Nearby Ranges

BGP prefixes that overlap with 66.99.0.0/16

Range ASN Company Num of IPs
66.99.0.0/16 AS6325 Illinois Century Network 65,536
66.99.240.0/23 AS46286 COOK COUNTY 512
66.99.5.0/24 AS19480 HAROLD WASHINGTON LIBRARY CENTER 256
66.99.209.0/24 AS6325 PALATINE CCSD 15 256

Hosted domains

There are 11 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
66.99.11.12 cuchicago.edu 2
66.99.8.45 luthed.net 2
66.99.47.4 wheatonpl.org 1
66.99.22.180 besd61.k12.il.us 1
66.99.11.76 adsfa.ltd 1
66.99.8.73 icns.net 1
66.99.19.10 prairieg.k12.il.us 1
66.99.47.25 wheaton.lib.il.us 1
66.99.53.148 yorkville.k12.il.us 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

253 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
66.99.38.2 AS6325 Illinois Century Network 0.87ms from Chicago, US
66.99.50.129 AS6325 Illinois Century Network 0.98ms from Chicago, US
66.99.13.248 AS6325 Illinois Century Network 1.64ms from Chicago, US
66.99.59.1 AS6325 Illinois Century Network 1.76ms from Chicago, US
66.99.14.26 AS6325 Illinois Century Network 1.51ms from Chicago, US
66.99.51.1 AS6325 Illinois Century Network 2.90ms from Chicago, US
66.99.23.2 AS6325 Illinois Century Network 1.72ms from Chicago, US
66.99.56.1 AS6325 Illinois Century Network 1.32ms from Chicago, US
66.99.5.166 AS19480 CHICAGO PUBLIC LIBRARY 0.91ms from Chicago, US
66.99.29.18 AS6325 Illinois Century Network 2.12ms from Chicago, US
66.99.48.22 AS6325 Illinois Century Network 2.07ms from Chicago, US
66.99.43.225 AS6325 Illinois Century Network 1.17ms from Chicago, US
66.99.55.33 AS6325 Illinois Century Network 1.23ms from Chicago, US
66.99.10.143 AS6325 Illinois Century Network 2.26ms from Chicago, US
66.99.11.14 AS6325 Illinois Century Network 2.27ms from Chicago, US
66.99.15.71 AS6325 Illinois Century Network 1.34ms from Chicago, US
66.99.28.99 AS6325 Illinois Century Network 1.66ms from Chicago, US
66.99.20.65 AS6325 Illinois Century Network 2.30ms from Chicago, US
66.99.57.10 AS6325 Illinois Century Network 2.32ms from Chicago, US
66.99.45.42 AS6325 Illinois Century Network 1.91ms from Chicago, US
66.99.22.161 AS6325 Illinois Century Network 3.60ms from Chicago, US
66.99.27.161 AS6325 Illinois Century Network 0.74ms from Chicago, US
66.99.8.1 AS6325 Illinois Century Network 2.15ms from Chicago, US
66.99.25.97 AS6325 Illinois Century Network 3.30ms from Chicago, US
66.99.58.33 AS6325 Illinois Century Network 2.63ms from Chicago, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
46.190.41.66 AS25472 Nova Telecommunications & Media Single Member S.A 9.07ms from Athens, GR
222.129.188.114 AS4808 China Unicom Beijing Province Network 3.25ms from Beijing, CN
20.110.82.66 AS8075 Microsoft Corporation 0.33ms from Boydton, US
200.42.150.226 AS7303 Telecom Argentina S.A. 4.11ms from Buenos Aires, AR
156.204.114.114 AS8452 TE-AS 6.84ms from Cairo, EG
41.141.187.34 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 1.95ms from Casablanca, MA
43.137.61.2 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.63ms from Chengdu, CN
34.134.28.2 AS396982 Google LLC 0.13ms from Council Bluffs, US
89.200.175.114 AS25504 Vautron Rechenzentrum AG 5.35ms from Frankfurt am Main, DE
49.246.34.194 AS10054 CMB Kwangju Broadcasting 6.40ms from Incheon, KR
125.158.147.18 AS4766 Korea Telecom 1.81ms from Incheon, KR
218.55.65.130 AS9318 SK Broadband Co Ltd 2.29ms from Incheon, KR
202.70.153.18 AS9557 Paknet Limited Merged into PTCL 0.77ms from Karachi, PK
80.5.153.210 AS5089 Virgin Media Limited 9.30ms from London, GB
149.154.182.18 AS199954 Techwareca Ltd. 0.31ms from Madrid, ES
112.132.21.18 AS4837 CHINA UNICOM China169 Backbone 9.80ms from Nanjing, CN
93.199.201.130 AS3320 Deutsche Telekom AG 6.95ms from Nuernberg, DE
210.57.91.130 AS4637 Telstra Global 0.67ms from Osaka, JP
90.91.238.194 AS3215 Orange S.A. 1.91ms from Paris, FR
58.140.42.18 AS10036 DLIVE 6.09ms from Seoul, KR
163.20.107.18 AS1659 Taiwan Academic Network (TANet) Information Center 3.17ms from Taipei, TW
113.36.193.226 AS17506 ARTERIA Networks Corporation 1.00ms from Tokyo, JP
160.251.40.2 AS7506 GMO Internet Group, Inc. 0.46ms from Tokyo, JP
193.186.46.178 AS213080 Oberoesterreichische Gesundheitsholding GmbH 8.51ms from Vienna, AT
80.60.253.130 AS1136 KPN B.V. 2.93ms from Amsterdam, NL

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f4 66.99.38.1
traceroute to 66.99.38.1 (66.99.38.1): 64 hops max, 52 byte packets
4 [] 15.230.139.194 364.381 ms
5 *
6 *
7 *
8 *
9 [] 150.222.212.158 0.517 ms
10 [] 208.115.136.22 0.636 ms
11 [AS6325] 206.166.9.209 1.31 ms
12 [AS6325] 206.166.9.70 1.284 ms
13 [AS6325] 206.166.35.13 1.334 ms
14 [AS6325] 66.99.38.1 1.328 ms
Measurement taken from IPinfo ProbeNet in Chicago, US
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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