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	Prefix	Description
	55.16.0.0/16	Headquarters, USAISC
	55.16.2.0/24	Headquarters, USAISC
	55.16.124.0/23	Headquarters, USAISC
	55.16.126.0/23	Headquarters, USAISC
	55.16.199.0/24	Headquarters, USAISC
	55.16.201.0/24	Headquarters, USAISC
	55.16.208.0/23	Headquarters, USAISC
	55.16.210.0/24	Headquarters, USAISC
	55.16.211.0/24	Headquarters, USAISC
	55.16.213.0/24	Headquarters, USAISC

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS306	United States Department of Defense (DoD)	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS306	United States Department of Defense (DoD)	✔	✘

ASHandle:       AS306
OrgID:          USDDD
ASName:         DNIC-ASBLK-00306-00371
ASNumber:       306 - 371
RegDate:        1989-06-30
Updated:        2025-09-12
Source:         ARIN



OrgID:          USDDD
OrgName:        United States Department of Defense (DoD)
CanAllocate:    
Street:         3990 E. Broad Street
City:           Columbus
State/Prov:     OH
Country:        US
PostalCode:     43218
RegDate:        2007-01-12
Updated:        2025-03-13
OrgAdminHandle: REGIS10-ARIN
OrgTechHandle:  MIL-HSTMST-ARIN
OrgTechHandle:  REGIS10-ARIN
OrgAbuseHandle: MIL-HSTMST-ARIN
OrgNOCHandle:   MIL-HSTMST-ARIN
Source:         ARIN





OrgAdminHandle:       REGIS10-ARIN
OrgAdminName:          Registration
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        MIL-HSTMST-ARIN
OrgTechName:           Network DoD
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        REGIS10-ARIN
OrgTechName:           Registration
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       MIL-HSTMST-ARIN
OrgAbuseName:          Network DoD
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         MIL-HSTMST-ARIN
OrgNOCName:            Network DoD
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-17T03:25:39Z UTC

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Member of the following AS-SETs

-	Member	ASN Count