1. All IP Ranges
  2. 66.0.0.0/8
  3. 66.158.0.0/16
  4. AS6325  | 66.158.0.0/17

66.158.0.0/17

AS6325  ·  Illinois Century Network

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Summary

Country United States
Domain illinois.gov
ASN AS6325
Registry ARIN
ID ICN8

WHOIS Details

NetHandle:      NET-66-158-0-0-1
OrgID:          ILTN
Parent:         NET-66-0-0-0-0
NetName:        ICN8
NetRange:       66.158.0.0 - 66.158.127.255
NetType:        allocation
RegDate:        2001-07-30
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:      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


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

Overlapping Ranges

BGP prefixes that are contained by 66.158.0.0/17

Range ASN Company Num of IPs
66.158.104.0/24 AS6325 SAC-H001 256
66.158.46.0/24 AS32344 CHSD 99 256
66.158.58.0/24 AS33248 CITY OF EVANSTON - CIVIC CENTER 256
66.158.65.0/24 AS33248 CITY OF EVANSTON - CIVIC CENTER 256

Nearby Ranges

BGP prefixes that overlap with 66.158.0.0/16

Range ASN Company Num of IPs
66.158.128.0/19 AS16532 B2B2C Inc 8,192
66.158.160.0/20 AS11069 Altafiber 4,096
66.158.176.0/20 AS12231 Conway Corporation 4,096
66.158.152.0/22 AS1403 EBOX 1,024
66.158.148.0/22 AS1403 EBOX 1,024
66.158.156.0/22 AS1403 EBOX 1,024
66.158.104.0/24 AS6325 SAC-H001 256
66.158.58.0/24 AS33248 CITY OF EVANSTON - CIVIC CENTER 256
66.158.46.0/24 AS32344 CHSD 99 256
66.158.65.0/24 AS33248 CITY OF EVANSTON - CIVIC CENTER 256

Hosted domains

There are 76 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
66.158.104.62 mapnet.org 20
66.158.104.80 prepagoyguardar.org 16
66.158.104.104 whatsnextil.org 6
66.158.104.100 collegechangeseverything.com 4
66.158.36.170 il12th.org 3
66.158.104.23 529prepaidtuition.org 2
66.158.104.73 collegeillinois.com 2
66.158.104.75 collegezone.com 2
66.158.38.81 pensant.com 1
66.158.104.42 isaccom.org 1
66.158.109.177 lasecfp.k12.il.us 1
66.158.104.18 knowhow2goillinois.org 1
66.158.49.13 prairiestate.edu 1
66.158.104.112 ilhighschool2career.com 1
66.158.34.3 addison.lib.il.us 1
66.158.36.244 willcountyijuror.com 1
66.158.72.12 mtassisi.org 1
66.158.48.98 unojams.com 1
66.158.113.3 bbchs.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

4,458 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
66.158.20.155 AS6325 Illinois Century Network 5.37ms from Chicago, US
66.158.37.130 AS6325 Illinois Century Network 2.08ms from Chicago, US
66.158.34.1 AS6325 Illinois Century Network 1.95ms from Chicago, US
66.158.2.238 AS6325 Illinois Century Network 5.34ms from Chicago, US
66.158.44.193 AS6325 Illinois Century Network 2.17ms from Chicago, US
66.158.60.2 AS6325 Illinois Century Network 2.10ms from Chicago, US
66.158.48.2 AS6325 Illinois Century Network 2.29ms from Chicago, US
66.158.43.5 AS6325 Illinois Century Network 1.51ms from Chicago, US
66.158.23.90 AS6325 Illinois Century Network 5.40ms from Chicago, US
66.158.47.2 AS6325 Illinois Century Network 2.20ms from Chicago, US
66.158.45.193 AS6325 Illinois Century Network 2.31ms from Chicago, US
66.158.35.163 AS6325 Illinois Century Network 3.25ms from Chicago, US
66.158.61.34 AS6325 Illinois Century Network 3.55ms from Chicago, US
66.158.16.31 AS6325 Illinois Century Network 5.36ms from Chicago, US
66.158.39.1 AS6325 Illinois Century Network 1.74ms from Chicago, US
66.158.3.161 AS6325 Illinois Century Network 5.31ms from Chicago, US
66.158.12.125 AS6325 Illinois Century Network 5.33ms from Chicago, US
66.158.46.2 AS32344 Community High School District 99 2.27ms from Chicago, US
66.158.6.46 AS6325 Illinois Century Network 5.34ms from Chicago, US
66.158.17.78 AS6325 Illinois Century Network 5.37ms from Chicago, US
66.158.91.2 AS6325 Illinois Century Network 1.29ms from Chicago, US
66.158.66.17 AS6325 Illinois Century Network 0.72ms from Chicago, US
66.158.8.129 AS6325 Illinois Century Network 5.28ms from Chicago, US
66.158.50.1 AS6325 Illinois Century Network 2.53ms from Chicago, US
66.158.77.1 AS6325 Illinois Century Network 2.13ms 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
137.116.117.241 AS8075 Microsoft Corporation 0.41ms from Ashburn, US
191.89.0.1 AS27831 Colombia Móvil 9.10ms from Bogota, CO
72.215.238.241 AS22773 Cox Communications Inc. 2.74ms from Boston, US
4.31.158.33 AS3356 Level 3 Parent, LLC 0.39ms from Boston, US
188.244.53.1 AS25424 CEZNET s.r.o. 2.43ms from Bratislava, SK
181.229.145.1 AS7303 Telecom Argentina S.A. 1.21ms from Buenos Aires, AR
41.129.160.1 AS24863 Link Egypt (Link.NET) 1.16ms from Cairo, EG
171.216.83.1 AS4134 CHINANET-BACKBONE 2.75ms from Chengdu, CN
119.7.209.1 AS4837 CHINA UNICOM China169 Backbone 6.33ms from Chengdu, CN
199.96.170.1 AS36069 City of Chanute, Kansas 11.81ms from Dallas, US
208.197.36.225 AS701 Verizon Business 0.53ms from Dallas, US
3.73.59.81 AS16509 Amazon.com, Inc. 0.44ms from Frankfurt am Main, DE
213.238.220.65 AS8434 Telenor Sverige AB 4.83ms from Goeteborg, SE
115.224.82.65 AS4134 CHINANET-BACKBONE 6.60ms from Hangzhou, CN
185.148.221.97 AS203972 LLC TatAISneft 6.00ms from Kazan, RU
207.204.109.1 AS30689 FLOW 2.67ms from Kingston, JM
103.160.242.1 AS141515 Cyber Peace Foundation 6.37ms from Kolkata, IN
123.190.45.33 AS4837 CHINA UNICOM China169 Backbone 8.27ms from Liaoyang, CN
89.143.223.1 AS5603 Telekom Slovenije, d.d. 0.65ms from Ljubljana, SI
35.179.107.65 AS16509 Amazon.com, Inc. 0.16ms from London, GB
94.174.232.1 AS5089 Virgin Media Limited 7.13ms from London, GB
98.176.76.1 AS22773 Cox Communications Inc. 5.80ms from Los Angeles, US
206.162.225.33 AS33548 Unwired Broadband, LLC 6.89ms from Los Angeles, US
47.176.224.129 AS5650 Frontier Communications of America, Inc. 0.54ms from Los Angeles, US
101.187.27.1 AS1221 Telstra Limited 0.51ms from Melbourne, AU

Traceroute

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

$
traceroute -a -n -q1 -f2 66.158.43.4
traceroute to 66.158.43.4 (66.158.43.4): 64 hops max, 52 byte packets
3 *
4 [AS3356] 4.68.74.22 132.157 ms
5 [AS3257] 89.149.140.197 165.686 ms
6 [AS3257] 208.116.128.6 165.202 ms
7 [AS6325] 206.166.9.209 160.964 ms
8 [AS6325] 206.166.35.5 160.937 ms
9 [AS6325] 64.150.36.22 166.866 ms
10 [AS6325] 66.158.43.4 167.887 ms
Measurement taken from IPinfo ProbeNet in Rosario, AR
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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