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Data as of Nov 3, 2026

155.6.55.0/24

No anonymizer space · no proxy exits in 30 days

Headquarters, USAISC · reallocated from United States Department of Defense (DoD)

Announcement
this exact prefix
No RPKI
Announced by
AS1637
Type
Business
Risk
0 / 100 · Low
Recent change
New origin May 2026
from AS1637 Headquarters, USAISC, after 2.1 years unannounced

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
155.6.0.0/16
since May 2025
AS1637BusinessUnited States Department of Defense (DoD)
via Headquarters, USAISC

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
155.6.0.0/1665,536YOKOHAMA-NETUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationJan 13, 1992[email protected]
└ 155.6.0.0/1665,536YOKOHAMA-NETHeadquarters, USAISC (HEADQU-3) · USReallocatedAug 23, 2025—

Network & registry

AnnouncementRouting historyWhois & abuse
Registry

Holder

Organization
United States Department of Defense (DoD)
Handle
USDDD
Range
155.6.0.0/16
Registration type
Direct Allocation
Record created
Jan 13, 1992
Legacy
yes
Reallocated to
Headquarters, USAISC (HEADQU-3)
Reallocated
Aug 23, 2025
Origin network

AS1637

US
Name
Headquarters, USAISC
Type
Business
Registered
May 12, 2004
Domain
mail.mil
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed