AS1856 RTX BBN Technologies, Inc.

DISN-PILOTNET2 - RTX BBN Technologies, Inc. · registered in the United States

IPv4 addresses88,83234 prefixes · 0.003% of announced IPv4

Rank in United States#676largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,032of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS1856 in ASN lookup Look up an IP in this network (128.33.0.1) All networks in United States

IPv4 prefixes

All 34 prefixes, in address order.

128.33.0.0/20
128.33.16.0/21
128.33.24.0/24
128.33.26.0/23
128.33.28.0/22
128.33.32.0/19
128.33.64.0/18
128.33.128.0/18
128.33.192.0/23
128.33.194.0/24
128.33.195.0/24
128.33.196.0/22
128.33.200.0/21
128.33.208.0/20
128.33.224.0/20
128.33.240.0/21
128.33.248.0/22
128.33.252.0/23
128.33.254.0/24
192.1.0.0/22
192.1.4.0/23
192.1.7.0/24
192.1.8.0/21
192.1.20.0/22
192.1.24.0/21
192.1.32.0/20
192.1.64.0/19
192.1.110.0/24
192.1.113.0/24
192.1.120.0/23
192.1.122.0/24
192.1.124.0/22
192.1.140.0/24
192.1.144.0/21

Other ASNs named RTX BBN Technologies, Inc.

6 other networks use the same organisation name; together with AS1856 they announce 94,208 IPv4 addresses.

ASNNameIPv4 addresses

AS1858DISN-PILOTNET4 - RTX BBN Technologies, Inc. US2,560

AS1855RBT-EDGE - RTX BBN Technologies, Inc. US1,536

AS1857DISN-PILOTNET3 - RTX BBN Technologies, Inc. US512

AS1859DISN-PILOTNET5 - RTX BBN Technologies, Inc. US256

AS1861DISN-PILOTNET7 - RTX BBN Technologies, Inc. US256

AS3515DSI-WR - RTX BBN Technologies, Inc. US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS55293#673 A2HOSTING - A2 Hosting, Inc.89,344

AS63023#674 AS-GLOBALTELEHOST - GTHost89,088

AS25653#675 FORTRESSITX - FortressITX89,088

AS13789#677 INTERNAP-BLK3 - Unitas Global88,576

AS15081#678 OMNI-FIBER - Omni Fiber88,320

AS289#679 DNIC-AS-00289 - Headquarters, USAISC88,320

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources