AS3378 Verizon Business

MCI-ASN - Verizon Business · registered in the United States

IPv4 addresses64,25631 prefixes · 0.002% of announced IPv4

Rank in United States#1,352largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,538of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS3378 in ASN lookup Look up an IP in this network (142.77.1.1) All networks in United States

IPv4 prefixes

All 31 prefixes, in address order.

142.77.1.0/24
142.77.14.0/24
142.77.32.0/24
142.77.46.0/24
146.1.1.0/24
146.1.2.0/24
146.1.4.0/23
146.1.6.0/24
146.1.16.0/23
146.1.24.0/21
146.1.40.0/21
146.1.192.0/19
159.24.64.0/20
159.98.72.0/21
159.98.104.0/21
159.98.112.0/22
162.47.128.0/20
162.47.144.0/22
165.122.128.0/20
166.34.64.0/18
166.38.96.0/19
166.38.132.0/23
166.38.136.0/23
198.168.54.0/24
198.168.73.0/24
199.249.16.0/21
199.249.24.0/22
199.249.28.0/23
199.249.30.0/23
205.150.161.0/24
205.150.163.0/24

Other ASNs named Verizon Business

48 other networks use the same organisation name; together with AS3378 they announce 86,845,440 IPv4 addresses. Largest 30 shown.

ASNNameIPv4 addresses

AS701UUNET - Verizon Business US40,608,768

AS6167CELLCO-PART - Verizon Business US18,082,816

AS22394CELLCO - Verizon Business US12,308,992

AS2828XO-AS15 - Verizon Business US6,535,680

AS702UUNET - Verizon Business US5,716,992

AS3371MCI-ASN - Verizon Business US1,153,280

AS703UUNET - Verizon Business US694,784

AS7046RFC2270-UUNET-CUSTOMER - Verizon Business US520,448

AS3372MCI-ASN - Verizon Business US424,704

AS12079CELLCO-PART - Verizon Business US165,120

AS14551UUNET-SA - Verizon Business US146,944

AS6984NYNEX-AS - Verizon Business US89,856

AS3377MCI-ASN - Verizon Business US78,336

AS3369MCI-ASN - Verizon Business US49,920

AS3375MCI-ASN - Verizon Business US33,280

AS6256CELLCO-PART - Verizon Business US24,064

AS3376MCI-ASN - Verizon Business US21,504

AS1699ANS-1699-AS - Verizon Business US19,456

AS17373MCI-COV - Verizon Business US16,640

AS1661ANS-ATLANTA - Verizon Business US11,520

AS6976VZN-VOL2 - Verizon Business US11,008

AS6995VRIS-6995 - Verizon Business US8,960

AS3373MCI-ASN - Verizon Business US8,192

AS3374MCI-ASN - Verizon Business US6,144

AS1321ANSBB-ASNNET-1 - Verizon Business US5,888

AS19027XO-ASN11 - Verizon Business US5,120

AS1339ANSBB-ASNNET-1 - Verizon Business US4,352

AS1689ANS-1689-AS - Verizon Business US3,840

AS7021VRIS-7021 - Verizon Business US3,840

AS33052VZUNET - Verizon Business US3,328

Similar-sized networks in United States

ASNNameIPv4 addresses

AS32073#1349 MCPS-K12-MD-US - Montgomery County Public Schools64,512

AS19148#1350 LEASEWEB-USA-PHX - Leaseweb USA, Inc.64,256

AS18530#1351 ISOMEDIA-1 - Isomedia, Inc.64,256

AS4531#1353 MEDWEB - Nexsys Electronics, Inc.64,256

AS12013#1354 FAUNET - Florida Atlantic University64,256

AS27185#1355 DHS-INTERNET - Danbury Hospital - ITG64,256

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