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	Prefix	Description
	23.226.104.0/22	Block Line Systems, LLC
	24.53.144.0/21	Block Line Systems, LLC
	162.218.76.0/22	Block Line Systems, LLC
	162.249.204.0/22	Block Line Systems, LLC
	192.96.64.0/22	Block Line Systems, LLC
	199.91.200.0/22	Block Line Systems, LLC
	199.185.182.0/24	Philadelphia Corporation for Aging
	199.191.104.0/21	Block Line Systems, LLC
	199.241.172.0/22	Block Line Systems, LLC
	208.84.248.0/24	Block Line Systems, LLC
	208.84.249.0/24	Block Line Systems, LLC
	208.84.250.0/24	Block Line Systems, LLC
	208.84.251.0/24	Block Line Systems, LLC
	208.84.252.0/24	Block Line Systems, LLC
	208.84.253.0/24	Block Line Systems, LLC
	208.84.254.0/24	Block Line Systems, LLC
	208.84.255.0/24	Block Line Systems, LLC
	2604:ca80::/32	Block Line Systems, LLC
	2604:ca80:401::/48	Block Line Systems, LLC

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS174	Cogent Communications, LLC	✔	✘
	AS6939	Hurricane Electric LLC	✔	✔
	AS3257	GTT Communications Inc.	✔	✔
	AS6461	Zayo Bandwidth	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS6939	Hurricane Electric LLC	✔	✔
	AS6461	Zayo Bandwidth	✔	✔
	AS174	Cogent Communications, LLC	✔	✘
	AS3257	GTT Communications Inc.	✔	✔
	AS13931	MASONIC CHARITY FOUNDATION OF NEW JERSEY	✔	✘
	AS13785	SHORE MEMORIAL HOSPITAL	✔	✘
	AS14529	Saint Joseph's University	✔	✘
	AS54472	South Jersey Radiology Associates, P.A.	✔	✘
	AS46181	BCI Mississippi Broadband,LLC	✔	✘
	AS21690	Miles IT Company	✔	✘
	AS14773	Lancaster-Lebanon Intermediate Unit 13	✔	✘
	AS32554	Montgomery County Intermediate Unit	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS54472	South Jersey Radiology Associates, P.A.	✔	✘
	AS13931	MASONIC CHARITY FOUNDATION OF NEW JERSEY	✔	✘
	AS13785	SHORE MEMORIAL HOSPITAL	✔	✘
	AS14529	Saint Joseph's University	✔	✘
	AS46181	BCI Mississippi Broadband,LLC	✔	✘
	AS21690	Miles IT Company	✔	✘

ASHandle:       AS26076
OrgID:          BLSL
ASName:         INFINITECOM
ASNumber:       26076
RegDate:        2007-10-24
Updated:        2017-05-08
Source:         ARIN



OrgID:          BLSL
OrgName:        Block Line Systems, LLC
CanAllocate:    
Street:         1645 West Chester Pike
Street:         Suite 200
City:           West Chester
State/Prov:     PA
Country:        US
PostalCode:     19382
RegDate:        2015-11-12
Updated:        2025-09-16
ReferralServer: rwhois://rwhois.infinitecom.net:4321
OrgAdminHandle: INE20-ARIN
OrgTechHandle:  INE20-ARIN
OrgTechHandle:  MST395-ARIN
OrgTechHandle:  OWOLA3-ARIN
OrgAbuseHandle: IAA18-ARIN
OrgNOCHandle:   INE20-ARIN
Source:         ARIN





OrgAdminHandle:       INE20-ARIN
OrgAdminName:          IP Network Engineering
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        INE20-ARIN
OrgTechName:           IP Network Engineering
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        MST395-ARIN
OrgTechName:          Michael Totoro
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        OWOLA3-ARIN
OrgTechName:          Olu Owolabi
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       IAA18-ARIN
OrgAbuseName:          IP Address Administrator
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         INE20-ARIN
OrgNOCName:            IP Network Engineering
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-12T03:27:16Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-lumen-customers-asns	10695
ARIN	as-xo	1
ARIN	as-xo-b	59957
RIPE	as-transroute-spec	19619
RADB	as26076:as-cone	7
ARIN	as-phillyix-rs	35062
RADB	as-hurricanev6	21146
RADB	as-hurricane	25048