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	Prefix	Description
	170.121.8.0/21	Washington Metropolitan Area Transit Authority
	170.121.12.0/22	Washington Metropolitan Area Transit Authority
	170.121.68.0/22	Washington Metropolitan Area Transit Authority
	170.121.192.0/22	Washington Metropolitan Area Transit Authority
	170.121.244.0/22	Washington Metropolitan Area Transit Authority
	170.121.252.0/22	Washington Metropolitan Area Transit Authority

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS33657	Comcast Cable Communications, LLC	✔	✘
	AS6079	Astound (fka. RCN)	✔	✘
	AS6461	Zayo Bandwidth	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS33657	Comcast Cable Communications, LLC	✔	✘
	AS6079	Astound (fka. RCN)	✔	✘
	AS6461	Zayo Bandwidth	✔	✘

ASHandle:       AS17190
OrgID:          WMATA
ASName:         ASN17190
ASNumber:       17190
RegDate:        2023-01-26
Updated:        2023-01-26
Source:         ARIN



OrgID:          WMATA
OrgName:        Washington Metropolitan Area Transit Authority
CanAllocate:    
Street:         300 7th Street, SW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20024
RegDate:        1994-04-18
Updated:        2024-01-29
OrgAdminHandle: APA265-ARIN
OrgTechHandle:  APA265-ARIN
OrgAbuseHandle: APA265-ARIN
OrgNOCHandle:   APA265-ARIN
OrgRoutingHandle:   APA265-ARIN
OrgDNSHandle:   APA265-ARIN
Source:         ARIN





OrgAdminHandle:       APA265-ARIN
OrgAdminName:          ARIN POC Admin
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        APA265-ARIN
OrgTechName:           ARIN POC Admin
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       APA265-ARIN
OrgAbuseName:          ARIN POC Admin
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         APA265-ARIN
OrgNOCName:            ARIN POC Admin
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     APA265-ARIN
OrgRoutingName:        ARIN POC Admin
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         APA265-ARIN
OrgDNSName:            ARIN POC Admin
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-17T03:27:17Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-comcast-edia	2749
LEVEL3	as-as209-cust	1818
RADB	as-rcn-customer	2255
LEVEL3	as-lumen-customers-asns	10695