205.172.72.0/21

AS18756 · Level 3 Parent, LLC

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Summary

Country	United States
Domain	pa.gov
ASN	AS18756
Registry	ARIN
ID	CWOPA

WHOIS Details

NetHandle:      NET-205-172-72-0-1
OrgID:          CPOINMS
Parent:         NET-205-0-0-0-0
NetName:        CWOPA
NetRange:       205.172.72.0 - 205.172.107.255
NetType:        allocation
RegDate:        1995-03-31
Updated:        2023-08-14
Source:         ARIN


OrgID:          CPOINMS
OrgName:        Commonwealth of PA - OA / Integrated Network Management Services
CanAllocate:    
Street:         1 Technology Park
City:           Harrisburg
State/Prov:     PA
Country:        US
PostalCode:     17110-2913
RegDate:        1993-03-19
Updated:        2024-11-25
OrgAdminHandle: DLM46-ARIN
OrgTechHandle:  ENS9-ARIN
OrgAbuseHandle: ENS9-ARIN
OrgNOCHandle:   ENS9-ARIN
Source:         ARIN


POCHandle:      ENS9-ARIN
IsRole:         Y
LastName:       Enterprise Network Services
FirstName:      
Street:         1 Technology Park
City:           Harrisburg
State/Prov:     PA
Country:        US
PostalCode:     17110
RegDate:        2013-03-05
Updated:        2025-04-18
OfficePhone:    +1-717-580-9653
Mailbox:        ens@pa.gov
Source:         ARIN


POCHandle:      DLM46-ARIN
IsRole:         N
LastName:       Martin
FirstName:      Darrell
Street:         1 Technology Park
City:           Harrisburg
State/Prov:     PA
Country:        US
PostalCode:     17110
RegDate:        2013-03-05
Updated:        2025-12-30
OfficePhone:    +1-717-705-9037
Mailbox:        damartin@pa.gov
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
12.77.183.213	AS7018 AT&T Enterprises, LLC	`0.69ms` from Atlanta, US
49.233.103.85	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.80ms` from Beijing, CN
181.174.197.133	AS262192 Skycorp S.A.	`1.39ms` from Buenos Aires, AR
52.59.226.213	AS16509 Amazon.com, Inc.	`0.48ms` from Frankfurt am Main, DE
87.156.150.117	AS3320 Deutsche Telekom AG	`4.30ms` from Hamburg, DE
211.203.13.213	AS9318 SK Broadband Co Ltd	`1.69ms` from Incheon, KR
201.143.226.5	AS8151 UNINET	`5.96ms` from Los Angeles, US
51.49.197.213	AS16509 Amazon.com, Inc.	`6.53ms` from Madrid, ES
62.152.121.85	AS8220 COLT Technology Services Group Limited	`0.79ms` from Milan, IT
31.186.103.165	AS50340 JSC Selectel	`0.62ms` from Moscow, RU
46.180.123.21	AS39927 E-Light-Telecom Ltd.	`4.54ms` from Novosibirsk, RU
83.11.0.101	AS5617 Orange Polska Spolka Akcyjna	`9.32ms` from Poznan, PL
44.195.11.85	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
34.200.146.5	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
27.32.109.37	AS7545 TPG Telecom Limited	`0.26ms` from Sydney, AU
74.216.235.5	AS6461 Zayo Bandwidth	`1.10ms` from Toronto, CA
190.200.6.149	AS8048 CANTV Servicios, Venezuela	`10.61ms` from Willemstad, CW
193.192.251.69	AS6730 Sunrise GmbH	`1.39ms` from Zuerich, CH
68.117.240.85	AS20115 Charter Communications LLC	`7.05ms` from Atlanta, US
207.254.78.101	AS395336 MacStadium, Inc.	`0.50ms` from Atlanta, US
101.200.132.117	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.07ms` from Beijing, CN
73.253.205.69	AS7922 Comcast Cable Communications, LLC	`5.12ms` from Boston, US
59.75.35.21	AS4538 China Education and Research Network Center	`15.00ms` from Chengdu, CN
112.193.169.21	AS4837 CHINA UNICOM China169 Backbone	`3.21ms` from Chengdu, CN
103.121.104.197	AS138150 Salim Khan & Milon Raihan	`0.31ms` from Dhaka, BD

Traceroute

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

traceroute -a -n -q1 -f4 -m7 205.172.74.72

traceroute to 205.172.74.72 (205.172.74.72): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.146 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, CN

On January 10th 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.

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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