66.99.64.0/18

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:      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


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:      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:      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

Overlapping Ranges

BGP prefixes that contain 66.99.64.0/18

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

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
66.99.51.0/24	AS6325	MANNHEIM SD 83	256

Hosted domains

There are 20 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
66.99.115.11	balibrary.org	9
66.99.100.137	hopeinstitutelearningacademy.org	6
66.99.64.37	cmrescueservices.com	3
66.99.70.70	stmarys.k12.il.us	1
66.99.127.3	noble.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

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

IP Address	ASN	Details
66.99.76.1	AS6325 Illinois Century Network	`7.64ms` from Chicago, US
66.99.93.193	AS6325 Illinois Century Network	`1.78ms` from Chicago, US
66.99.96.121	AS6325 Illinois Century Network	`9.21ms` from Chicago, US
66.99.103.193	AS6325 Illinois Century Network	`5.49ms` from Chicago, US
66.99.127.100	AS6325 Illinois Century Network	`0.91ms` from Chicago, US
66.99.90.65	AS6325 Illinois Century Network	`1.31ms` from Chicago, US
66.99.120.66	AS6325 Illinois Century Network	`1.45ms` from Chicago, US
66.99.95.2	AS6325 Illinois Century Network	`2.97ms` from Chicago, US
66.99.101.234	AS6325 Illinois Century Network	`4.82ms` from Chicago, US
66.99.124.29	AS6325 Illinois Century Network	`3.08ms` from Chicago, US
66.99.100.2	AS6325 Illinois Century Network	`7.07ms` from Chicago, US
66.99.115.1	AS6325 Illinois Century Network	`3.86ms` from Chicago, US
66.99.94.1	AS6325 Illinois Century Network	`1.06ms` 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
5.107.48.2	AS5384 Emirates Internet	`2.42ms` from Al Fujairah City, AE
77.172.128.130	AS1136 KPN B.V.	`2.47ms` from Amsterdam, NL
111.160.249.242	AS4837 CHINA UNICOM China169 Backbone	`5.88ms` from Beijing, CN
87.128.55.242	AS3320 Deutsche Telekom AG	`2.53ms` from Berlin, DE
44.246.44.98	AS16509 Amazon.com, Inc.	`0.11ms` from Boardman, US
139.140.88.130	AS22847 Bowdoin College	`4.32ms` from Boston, US
196.117.112.2	AS36925 MEDITELECOM	`2.90ms` from Casablanca, MA
200.247.195.210	AS4230 CLARO S.A.	`8.77ms` from Curitiba, BR
50.56.234.2	AS33070 Rackspace Hosting	`1.01ms` from Dallas, US
150.238.198.66	AS36351 IBM Cloud	`0.93ms` from Dallas, US
109.145.201.2	AS2856 British Telecommunications PLC	`1.70ms` from Erith, GB
87.129.151.130	AS3320 Deutsche Telekom AG	`1.10ms` from Frankfurt am Main, DE
96.95.242.114	AS7922 Comcast Cable Communications, LLC	`8.67ms` from Houston, US
164.119.72.82	AS2769 State of Nebraska / Office of the CIO	`9.36ms` from Kansas City, US
138.129.3.2	AS33136 Ozark Fiber, LLC	`10.57ms` from Kansas City, US
46.186.230.210	AS42961 Mobile Telecommunications Company K.S.C.P.	`7.43ms` from Kuwait City, KW
176.36.83.162	AS39608 Lanet Network Ltd	`0.47ms` from Kyiv, UA
109.181.86.146	AS2856 British Telecommunications PLC	`1.86ms` from London, GB
12.116.202.242	AS7018 AT&T Enterprises, LLC	`1.95ms` from Los Angeles, US
50.149.215.18	AS7922 Comcast Cable Communications, LLC	`4.42ms` from Miami, US
116.94.12.210	AS7679 QTnet,Inc.	`10.49ms` from Osaka, JP
98.89.198.162	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
85.114.24.114	AS8492 OBIT Ltd.	`0.71ms` from Saint Petersburg, RU
24.11.104.18	AS7922 Comcast Cable Communications, LLC	`5.58ms` from Salt Lake City, US
66.49.168.194	AS11814 Distributel Communications Limited	`18.61ms` from Seattle, US

Traceroute

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

traceroute -a -n -q1 -m5 66.99.114.141

traceroute to 66.99.114.141 (66.99.114.141): 5 hops max, 52 byte packets

1 [AS15169] 172.253.65.182 203.204 ms

2 [AS15169] 142.251.226.64 203.203 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On February 7th 2026

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.

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