66.99.128.0/17

AS6325  ·  Illinois Century Network

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Summary

Country United States
Domain illinois.gov
ASN AS6325
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:        2024-11-25
ReferralServer: rwhois://rwhois.illinois.net:4321
OrgAdminHandle: ZI83-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

Hosted domains

There are 47 domain names hosted across 24 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
66.99.170.26 swic.edu 4
66.99.138.92 roe27.k12.il.us 1
66.99.138.89 roe1.k12.il.us 1
66.99.138.91 roe26.k12.il.us 1
66.99.138.98 roe53.k12.il.us 1
66.99.138.97 roe51.k12.il.us 1
66.99.140.8 bcsd5.org 1
66.99.216.143 morton.edu 1
66.99.138.96 roe48.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

Pingable IPs

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

IP Address ASN Details
66.99.216.2 AS6325 Illinois Century Network 0.70ms from Chicago, US
66.99.250.176 AS6325 Illinois Century Network 2.13ms from Chicago, US
66.99.230.3 AS6325 Illinois Century Network 2.42ms from Chicago, US
66.99.180.163 AS6325 Illinois Century Network 7.32ms from Chicago, US
66.99.253.225 AS6325 Illinois Century Network 1.92ms from Chicago, US
66.99.140.217 AS6325 Illinois Century Network 5.28ms from Chicago, US
66.99.130.8 AS6325 Illinois Century Network 7.18ms from Chicago, US
66.99.143.3 AS6325 Illinois Century Network 5.18ms from Chicago, US
66.99.129.193 AS6325 Illinois Century Network 7.19ms from Chicago, US
66.99.170.193 AS6325 Illinois Century Network 7.29ms from Chicago, US
66.99.218.2 AS6325 Illinois Century Network 1.76ms from Chicago, US
66.99.217.98 AS6325 Illinois Century Network 3.12ms from Chicago, US
66.99.234.20 AS6325 Illinois Century Network 4.55ms from Chicago, US
66.99.169.106 AS6325 Illinois Century Network 6.79ms from Chicago, US
66.99.190.201 AS6325 Illinois Century Network 8.13ms from Chicago, US
66.99.209.17 AS6325 Illinois Century Network 2.35ms from Chicago, US
66.99.236.1 AS6325 Illinois Century Network 1.60ms from Chicago, US
66.99.193.17 AS6325 Illinois Century Network 3.22ms from St. Louis, US
66.99.229.1 AS6325 Illinois Century Network 1.12ms from Chicago, US
66.99.155.6 AS6325 Illinois Century Network 9.20ms from Chicago, US
66.99.128.136 AS6325 Illinois Century Network 7.42ms from Chicago, US
66.99.246.130 AS6325 Illinois Century Network 0.72ms from Chicago, US
66.99.240.1 AS46286 Cook County 0.50ms from Chicago, US
66.99.191.209 AS6325 Illinois Century Network 10.75ms from Chicago, US
66.99.237.129 AS6325 Illinois Century Network 2.42ms 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
94.56.73.97 AS5384 Emirates Internet 5.21ms from Al Fujairah City, AE
217.103.4.1 AS33915 Vodafone Libertel B.V. 0.81ms from Amsterdam, NL
152.7.45.1 AS11442 North Carolina State University 15.83ms from Ashburn, US
70.161.198.1 AS22773 Cox Communications Inc. 6.11ms from Ashburn, US
169.154.176.1 AS7847 NASA Goddard Space Flight Center 2.66ms from Ashburn, US
75.136.168.1 AS20115 Charter Communications LLC 9.69ms from Atlanta, US
24.31.9.1 AS40285 NORTHLAND CABLE TELEVISION INC. 7.34ms from Atlanta, US
211.103.95.1 AS38019 tianjin Mobile Communication Company Limited 3.87ms from Beijing, CN
131.239.34.1 AS46887 Crown Castle Fiber LLC 2.16ms from Boston, US
70.22.157.1 AS701 Verizon Business 1.38ms from Boston, US
73.4.32.1 AS7922 Comcast Cable Communications, LLC 1.86ms from Boston, US
20.36.248.1 AS8075 Microsoft Corporation 0.32ms from Boydton, US
147.232.125.1 AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET 6.91ms from Bratislava, SK
179.62.243.1 AS27983 Red Intercable Digital S.A. 5.17ms from Buenos Aires, AR
181.29.119.1 AS7303 Telecom Argentina S.A. 11.84ms from Buenos Aires, AR
197.48.77.113 AS8452 TE-AS 7.42ms from Cairo, EG
41.222.126.1 AS328446 Open Access Technologies (Pty) Ltd 0.93ms from Cape Town, ZA
117.139.13.1 AS9808 China Mobile Communications Group Co., Ltd. 3.24ms from Chengdu, CN
107.147.200.1 AS33363 Charter Communications, Inc 6.34ms from Chicago, US
74.45.15.161 AS5650 Frontier Communications of America, Inc. 10.21ms from Chicago, US
73.209.52.1 AS7922 Comcast Cable Communications, LLC 1.78ms from Chicago, US
125.86.74.65 AS4134 CHINANET-BACKBONE 1.97ms from Chongqing, CN
77.33.73.97 AS44869 FIBIA P/S 1.86ms from Copenhagen, DK
189.30.145.81 AS8167 V tal 12.86ms from Curitiba, BR
71.86.112.1 AS20115 Charter Communications LLC 4.85ms from Dallas, US

Traceroute

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

$
traceroute -a -n -q1 -f4 -m10 66.99.131.64
traceroute to 66.99.131.64 (66.99.131.64): 10 hops max, 52 byte packets
4 [AS3257] 89.149.140.201 28.626 ms
5 [AS3257] 208.116.128.6 20.444 ms
6 [AS6325] 206.166.9.209 27.566 ms
7 [AS6325] 206.166.9.70 27.402 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Denver, 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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