205.172.133.0/24

AS23494 · Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas

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Summary

Country	United States
Domain	hcsc.net
ASN	AS23494
Registry	ARIN
ID	BCBSILLINOIS

WHOIS Details

NetHandle:      NET-205-172-132-0-1
OrgID:          BBI
Parent:         NET-205-0-0-0-0
NetName:        BCBSILLINOIS
NetRange:       205.172.132.0 - 205.172.135.255
NetType:        allocation
RegDate:        1995-04-12
Updated:        2021-12-14
TechHandle:     MSA111-ARIN
AbuseHandle:    MSA111-ARIN
Source:         ARIN


OrgID:          BBI
OrgName:        BlueCross BlueShield of Illinois
CanAllocate:    
Street:         300 East Randolph
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60604-5655
RegDate:        1995-04-12
Updated:        2024-05-16
OrgAdminHandle: BARRK5-ARIN
OrgTechHandle:  MSA111-ARIN
OrgAbuseHandle: MSA111-ARIN
Source:         ARIN


POCHandle:      BARRK5-ARIN
IsRole:         N
LastName:       Barr
FirstName:      Kevin
Street:         300 E. Randolph Street
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60601
RegDate:        2024-05-16
Updated:        2025-05-16
OfficePhone:    +1-972-766-4412
MobilePhone:    +1-214-862-5353
Mailbox:        kevin_barr@bcbstx.com
Source:         ARIN


POCHandle:      MSA111-ARIN
IsRole:         N
LastName:       Sanner
FirstName:      Michael
Street:         300 East Randolph
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60601-5655
RegDate:        2006-09-06
Updated:        2024-05-16
OfficePhone:    +1-972-766-3576
MobilePhone:    +1-214-354-8112
Mailbox:        michael_sanner@bcbstx.com
Mailbox:        michael_sanner@hcsc.net
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 205.172.0.0/16

Range	ASN	Company	Num of IPs
205.172.120.0/21	AS26413	IP4B Inc.	2,048
205.172.176.0/22	AS16509	Amazon.com, Inc.	1,024
205.172.24.0/22	AS174	Hennigan & Mercer	1,024
205.172.168.0/22	AS1929	University of Massachusetts - AMHERST	1,024
205.172.12.0/22	AS32509	Sedgwick County Information Services	1,024
205.172.0.0/22	AS40300	DR Fortress, LLC	1,024
205.172.16.0/22	AS6534	Charter Communications Inc	1,024
205.172.164.0/22	AS88	McCarter Theatre Company	1,024
205.172.192.0/22	AS1436	Jersey Shore Medical Center Inc.	1,024
205.172.236.0/22	AS8103	Hillsborough County Public Health Unit	1,024
205.172.43.0/24	AS7312	FDM4 International Inc.	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
154.253.92.120	AS36947 Telecom Algeria	`12.03ms` from Algiers, DZ
92.189.60.8	AS12479 Orange Espagne SA	`14.68ms` from Barcelona, ES
34.245.54.56	AS16509 Amazon.com, Inc.	`0.59ms` from Dublin, IE
223.120.8.8	AS58453 China Mobile International Limited	`0.63ms` from Frankfurt am Main, DE
90.161.135.248	AS12479 Orange Espagne SA	`5.51ms` from Madrid, ES
174.58.73.184	AS7922 Comcast Cable Communications, LLC	`9.14ms` from Miami, US
147.219.9.104	AS20115 Charter Communications LLC	`16.24ms` from Minneapolis, US
198.251.67.88	AS8560 IONOS SE	`1.14ms` from New York City, US
180.147.50.72	AS17511 OPTAGE Inc.	`2.37ms` from Osaka, JP
160.153.93.168	AS26496 GoDaddy.com, LLC	`1.43ms` from Phoenix, US
27.218.171.88	AS4837 CHINA UNICOM China169 Backbone	`5.24ms` from Qingdao, CN
52.201.107.184	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
180.65.143.216	AS9318 SK Broadband Co Ltd	`7.97ms` from Seoul, KR
183.249.103.184	AS56041 China Mobile communications corporation	`4.25ms` from Shanghai, CN
123.189.84.168	AS4837 CHINA UNICOM China169 Backbone	`3.13ms` from Tieling, CN
197.205.191.216	AS36947 Telecom Algeria	`19.14ms` from Algiers, DZ
142.173.90.104	AS7029 Windstream Communications LLC	`0.74ms` from Ashburn, US
107.211.98.248	AS7018 AT&T Enterprises, LLC	`15.28ms` from Chicago, US
78.51.157.168	AS6805 Telefonica Germany GmbH & Co.OHG	`2.44ms` from Frankfurt am Main, DE
61.239.165.24	AS9269 Hong Kong Broadband Network Ltd.	`0.78ms` from Hong Kong, HK
220.79.80.200	AS4766 Korea Telecom	`0.90ms` from Incheon, KR
58.230.131.200	AS9318 SK Broadband Co Ltd	`4.69ms` from Incheon, KR
52.0.118.104	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
65.8.164.232	AS16509 Amazon.com, Inc.	`0.33ms` from San Jose, US
128.112.202.152	AS88 Princeton University	`2.75ms` from Secaucus, US

Traceroute

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

traceroute -a -n -q1 -m7 205.172.133.99

traceroute to 205.172.133.99 (205.172.133.99): 7 hops max, 52 byte packets

1 [AS15169] 142.251.54.146 99.203 ms

2 *

3 *

4 [AS3356] 4.15.84.22 146.383 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Osaka, JP

On January 18th 2026

What are IP address ranges?

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