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

66.99.0.0/16

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:        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:        [email protected]
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:        [email protected]
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:        [email protected]
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:        [email protected]
Source:         ARIN

Overlapping Ranges

BGP prefixes that are contained by 66.99.0.0/16

Range ASN Company Num of IPs
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
66.99.240.0/23 AS46286 COOK COUNTY 512

Nearby Ranges

BGP prefixes that overlap with 66.0.0.0/8

Range ASN Company Num of IPs
66.120.0.0/13 AS22352 AT&T Enterprises, LLC 524,288
66.136.0.0/13 AS16788 AT&T Enterprises, LLC 524,288
66.120.0.0/13 AS7018 AT&T Enterprises, LLC 524,288
66.136.0.0/13 AS7018 AT&T Enterprises, LLC 524,288
66.192.0.0/14 AS394750 Level 3 Parent, LLC 262,144
66.236.0.0/14 AS29819 Verizon Business 262,144
66.192.0.0/14 AS23314 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS32617 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29707 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS32268 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS35863 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS13628 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS29985 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS395837 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS11402 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS3356 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS395760 Level 3 Parent, LLC 262,144
66.236.0.0/14 AS2828 Verizon Business 262,144
66.192.0.0/14 AS29921 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS33745 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS62478 Level 3 Parent, LLC 262,144
66.12.0.0/14 AS701 Verizon Business 262,144
66.192.0.0/14 AS394171 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS13755 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS30258 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS3549 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS18929 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS14467 Level 3 Parent, LLC 262,144
66.192.0.0/14 AS400057 Level 3 Parent, LLC 262,144
66.104.0.0/14 AS2828 Verizon Business 262,144
66.20.0.0/15 AS2386 AT&T Enterprises, LLC 131,072
66.20.0.0/15 AS23199 AT&T Enterprises, LLC 131,072
66.166.0.0/15 AS3257 GTT Americas, LLC 131,072
66.88.0.0/15 AS2828 Verizon Business 131,072
66.100.0.0/15 AS3561 CenturyLink Communications, LLC 131,072
66.144.0.0/15 AS19902 Department of Administrative Services 131,072
66.30.0.0/15 AS7922 Comcast Cable Communications, LLC 131,072
66.100.0.0/15 AS27328 CenturyLink Communications, LLC 131,072
66.2.0.0/15 AS2828 Verizon Business 131,072
66.74.0.0/15 AS7224 Charter Communications Inc 131,072
66.74.0.0/15 AS20001 Charter Communications Inc 131,072
66.20.0.0/15 AS32467 AT&T Enterprises, LLC 131,072
66.176.0.0/15 AS7922 Comcast Cable Communications, LLC 131,072
66.92.0.0/15 AS3257 GTT Americas, LLC 131,072
66.66.0.0/15 AS11351 Charter Communications Inc 131,072
66.100.0.0/15 AS46854 CenturyLink Communications, LLC 131,072
66.74.0.0/15 AS11427 Charter Communications Inc 131,072
66.20.0.0/15 AS6389 AT&T Enterprises, LLC 131,072
66.72.0.0/15 AS7018 AT&T Enterprises, LLC 131,072
66.20.0.0/15 AS63238 AT&T Enterprises, LLC 131,072

Hosted domains

There are 77 domain names hosted across 39 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 3
66.99.64.37 renooffice.com 2
66.99.22.180 besd61.k12.il.us 1
66.99.138.91 roe26.k12.il.us 1
66.99.138.97 roe51.k12.il.us 1
66.99.217.101 glenview.lib.il.us 1
66.99.47.25 wheaton.lib.il.us 1
66.99.138.95 roe46.k12.il.us 1
66.99.138.89 roe1.k12.il.us 1
66.99.138.90 roe22.k12.il.us 1
66.99.138.93 roe33.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

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

IP Address ASN Details
66.99.20.65 AS6325 Illinois Century Network 2.31ms from Chicago, US
66.99.29.18 AS6325 Illinois Century Network 2.15ms from Chicago, US
66.99.25.97 AS6325 Illinois Century Network 3.30ms from Chicago, US
66.99.15.157 AS6325 Illinois Century Network 1.48ms from Chicago, US
66.99.22.161 AS6325 Illinois Century Network 3.63ms from Chicago, US
66.99.8.3 AS6325 Illinois Century Network 2.16ms from Chicago, US
66.99.5.166 AS19480 CHICAGO PUBLIC LIBRARY 0.93ms from Chicago, US
66.99.27.161 AS6325 Illinois Century Network 0.75ms from Chicago, US
66.99.14.6 AS6325 Illinois Century Network 1.48ms from Chicago, US
66.99.23.2 AS6325 Illinois Century Network 1.75ms from Chicago, US
66.99.13.248 AS6325 Illinois Century Network 1.53ms from Chicago, US
66.99.28.99 AS6325 Illinois Century Network 1.67ms from Chicago, US
66.99.250.176 AS6325 Illinois Century Network 2.17ms from Chicago, US
66.99.101.227 AS6325 Illinois Century Network 4.78ms from Chicago, US
66.99.97.47 AS6325 Illinois Century Network 108.78ms from Lugano, CH
66.99.180.163 AS6325 Illinois Century Network 7.38ms from Chicago, US
66.99.203.205 AS6325 Illinois Century Network 4.14ms from Chicago, US
66.99.169.106 AS6325 Illinois Century Network 6.83ms from Chicago, US
66.99.45.33 AS6325 Illinois Century Network 2.47ms from Chicago, US
66.99.55.33 AS6325 Illinois Century Network 1.18ms from Chicago, US
66.99.159.121 AS6325 Illinois Century Network 9.21ms from Chicago, US
66.99.124.29 AS6325 Illinois Century Network 3.04ms from Chicago, US
66.99.209.13 AS6325 Illinois Century Network 2.39ms from Chicago, US
66.99.224.225 AS6325 Illinois Century Network 1.02ms from Chicago, US
66.99.155.6 AS6325 Illinois Century Network 9.22ms 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
213.199.139.80 AS8075 Microsoft Corporation 0.29ms from Amsterdam, NL
194.1.230.16 AS5578 SWAN, a.s. 5.92ms from Bratislava, SK
198.253.19.96 AS22 Navy Network Information Center (NNIC) 1.78ms from Los Angeles, US
117.53.143.48 AS17551 Anycast Global Backbone 0.95ms from Perth, AU
52.200.46.128 AS14618 Amazon.com, Inc. 0.19ms from Reston, US
47.251.178.80 AS45102 Alibaba (US) Technology Co., Ltd. 0.46ms from Santa Clara, US
108.170.249.144 AS15169 Google LLC 0.19ms from Santiago de Queretaro, MX
70.70.45.176 AS6327 Shaw Communications 6.87ms from Seattle, US
49.85.196.16 AS140292 CHINATELECOM Jiangsu province Suzhou 5G network 5.72ms from Shanghai, CN
13.49.75.64 AS16509 Amazon.com, Inc. 0.15ms from Stockholm, SE
18.183.161.144 AS16509 Amazon.com, Inc. 1.24ms from Tokyo, JP
1.192.133.160 AS4134 CHINANET-BACKBONE 10.12ms from Zhengzhou, CN
82.170.240.64 AS1136 KPN B.V. 1.40ms from Amsterdam, NL
103.163.151.64 AS141265 Nextgen Broadband Private Limited 2.28ms from Delhi, IN
34.252.93.112 AS16509 Amazon.com, Inc. 0.19ms from Dublin, IE
91.21.83.176 AS3320 Deutsche Telekom AG 6.99ms from Frankfurt am Main, DE
144.125.207.240 AS31898 Oracle Corporation 0.70ms from Jerusalem, IL
90.161.131.64 AS12479 Orange Espagne SA 0.45ms from Madrid, ES
75.229.138.64 AS6167 Verizon Business 17.51ms from Miami, US
91.80.135.240 AS30722 Vodafone Italia S.p.A. 16.88ms from Milan, IT
95.229.82.80 AS3269 Telecom Italia S.p.A. 7.99ms from Naples, IT
79.186.135.16 AS5617 Orange Polska Spolka Akcyjna 6.65ms from Poznan, PL
221.169.211.0 AS4780 Digital United Inc. 2.92ms from Taipei, TW
126.46.158.16 AS17676 SoftBank Corp. 3.85ms from Tokyo, JP
126.45.23.112 AS17676 SoftBank Corp. 3.41ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f2 66.99.216.137
traceroute to 66.99.216.137 (66.99.216.137): 64 hops max, 52 byte packets
2 [] 156.146.32.232 0.239 ms
3 [AS174] 38.104.106.25 2.519 ms
4 [AS174] 154.54.82.141 0.639 ms
5 [AS174] 154.54.45.18 0.915 ms
6 [AS174] 160.81.203.6 9.807 ms
7 [AS6325] 206.166.9.209 1.358 ms
8 [AS6325] 206.166.35.5 1.357 ms
9 [AS6325] 64.150.44.202 1.827 ms
10 [AS6325] 66.99.216.2 0.882 ms
11 [AS6325] 66.99.216.137 0.859 ms
Measurement taken from IPinfo ProbeNet in Chicago, US
On

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