
3378 MCI-ASN - Verizon Business, US
Adjacency: 4 Upstream: 1 Downstream: 3
Upstream Adjacent AS list
AS701 UUNET - Verizon Business, US
Downstream Adjacent AS list
AS3377 MCI-ASN - Verizon Business, US
AS3372 MCI-ASN - Verizon Business, US
AS3371 MCI-ASN - Verizon Business, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 2875 AS3378 ORG+TRN Originate: 73728 /15.83 Transit: 2289664 /10.87 MCI-ASN - Verizon Business, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 8399 AS3378 MCI-ASN - Verizon Business, US 38 8 3 33 5 13.16% Prefix AS Path Aggregation Suggestion 142.77.1.0/24 4777 2516 701 3378 142.77.8.0/22 4777 2516 701 3378 142.77.14.0/24 4777 2516 701 3378 142.77.32.0/24 4777 2516 701 3378 142.77.46.0/24 4777 2516 701 3378 142.77.72.0/21 4777 2516 701 3378 142.77.80.0/20 4777 2516 701 3378 146.1.1.0/24 4777 2516 701 3378 146.1.2.0/24 4777 2516 701 3378 146.1.4.0/23 4777 2516 701 3378 146.1.6.0/24 4777 2516 701 3378 146.1.16.0/23 4777 2516 701 3378 146.1.24.0/21 4777 2516 701 3378 146.1.40.0/21 4777 2516 701 3378 146.1.192.0/19 4777 2516 701 3378 3378 3378 3378 159.24.64.0/20 4777 2516 701 3378 159.98.72.0/21 4777 2516 701 3378 159.98.104.0/21 4777 2516 701 3378 159.98.112.0/22 4777 2516 701 3378 162.47.128.0/20 4777 2516 701 3378 162.47.144.0/22 4777 2516 701 3378 + Announce - aggregate of 162.47.144.0/23 (4777 2516 701 3378) and 162.47.146.0/23 (4777 2516 701 3378) 162.47.144.0/23 4777 2516 701 3378 - Withdrawn - aggregated with 162.47.146.0/23 (4777 2516 701 3378) 162.47.146.0/23 4777 2516 701 3378 - Withdrawn - aggregated with 162.47.144.0/23 (4777 2516 701 3378) 165.122.128.0/20 4777 2516 701 3378 166.34.64.0/18 4777 2516 701 3378 166.38.96.0/19 4777 2516 701 3378 166.38.132.0/23 4777 2516 701 3378 166.38.136.0/23 4777 2516 701 3378 198.168.54.0/24 4777 2516 701 3378 198.168.73.0/24 4777 2516 701 3378 199.249.16.0/20 4777 2516 701 3378 3378 3378 199.249.18.0/23 4777 2516 701 3378 + Announce - aggregate of 199.249.18.0/24 (4777 2516 701 3378) and 199.249.19.0/24 (4777 2516 701 3378) 199.249.18.0/24 4777 2516 701 3378 - Withdrawn - aggregated with 199.249.19.0/24 (4777 2516 701 3378) 199.249.19.0/24 4777 2516 701 3378 - Withdrawn - aggregated with 199.249.18.0/24 (4777 2516 701 3378) 199.249.20.0/22 4777 2516 701 3378 + Announce - aggregate of 199.249.20.0/23 (4777 2516 701 3378) and 199.249.22.0/23 (4777 2516 701 3378) 199.249.20.0/24 4777 2516 701 3378 - Withdrawn - aggregated with 199.249.21.0/24 (4777 2516 701 3378) 199.249.21.0/24 4777 2516 701 3378 - Withdrawn - aggregated with 199.249.20.0/24 (4777 2516 701 3378) 199.249.22.0/24 4777 2516 701 3378 - Withdrawn - aggregated with 199.249.23.0/24 (4777 2516 701 3378) 199.249.23.0/24 4777 2516 701 3378 - Withdrawn - aggregated with 199.249.22.0/24 (4777 2516 701 3378) 199.249.29.0/24 4777 2516 701 3378 205.150.160.0/22 4777 2516 701 3378
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS3378 37 More Specifics 38 Total Advertisements MCI-ASN - Verizon Business, US
142.77.1.0/24 142.77.0.0/16
142.77.8.0/22 142.77.0.0/16
142.77.14.0/24 142.77.0.0/16
142.77.32.0/24 142.77.0.0/16
142.77.46.0/24 142.77.0.0/16
142.77.72.0/21 142.77.0.0/16
142.77.80.0/20 142.77.0.0/16
146.1.1.0/24 146.1.0.0/16
146.1.2.0/24 146.1.0.0/16
146.1.4.0/23 146.1.0.0/16
146.1.6.0/24 146.1.0.0/16
146.1.16.0/23 146.1.0.0/16
146.1.24.0/21 146.1.0.0/16
146.1.40.0/21 146.1.0.0/16
146.1.192.0/19 146.1.0.0/16
159.24.64.0/20 159.24.0.0/16
159.98.72.0/21 159.98.0.0/16
159.98.104.0/21 159.98.0.0/16
159.98.112.0/22 159.98.0.0/16
162.47.128.0/20 162.47.0.0/16
162.47.144.0/23 162.47.0.0/16
162.47.146.0/23 162.47.0.0/16
165.122.128.0/20 165.122.0.0/16
166.34.64.0/18 166.32.0.0/13
166.38.96.0/19 166.32.0.0/13
166.38.132.0/23 166.32.0.0/13
166.38.136.0/23 166.32.0.0/13
198.168.54.0/24 198.168.54.0/23
198.168.73.0/24 198.168.64.0/20
199.249.18.0/24 199.249.16.0/20
199.249.19.0/24 199.249.16.0/20
199.249.20.0/24 199.249.16.0/20
199.249.21.0/24 199.249.16.0/20
199.249.22.0/24 199.249.16.0/20
199.249.23.0/24 199.249.16.0/20
199.249.29.0/24 199.249.16.0/20
205.150.160.0/22 205.150.0.0/16
whois: 402603
IANA has recorded AS3378 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS3378\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 3369 - 3378
ASName: MCI-ASN
ASHandle: AS3369
RegDate: 1994-01-06
Updated: 2024-07-02
Ref: https://rdap.arin.net/registry/autnum/3369
OrgName: Verizon Business
OrgId: MCICS
Address: 22001 Loudoun County Pkwy
City: Ashburn
StateProv: VA
PostalCode: 20147
Country: US
RegDate: 2006-05-30
Updated: 2025-10-28
Ref: https://rdap.arin.net/registry/entity/MCICS
OrgTechHandle: VIS1-ARIN
OrgTechName: Verizon Internet Services
OrgTechPhone: +1-800-243-6994
OrgTechEmail: IPMGMT@verizon.com
OrgTechRef: https://rdap.arin.net/registry/entity/VIS1-ARIN
OrgDNSHandle: VZDNS1-ARIN
OrgDNSName: VZ-DNSADMIN
OrgDNSPhone: +1-800-900-0241
OrgDNSEmail: dnsadmin@verizon.com
OrgDNSRef: https://rdap.arin.net/registry/entity/VZDNS1-ARIN
OrgTechHandle: SWIPP9-ARIN
OrgTechName: SWIPPER
OrgTechPhone: +1-800-900-0241
OrgTechEmail: swipper@verizonbusiness.com
OrgTechRef: https://rdap.arin.net/registry/entity/SWIPP9-ARIN
OrgAbuseHandle: ABUSE5603-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-800-900-0241
OrgAbuseEmail: abuse@verizon.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE5603-ARIN
OrgAbuseHandle: ABUSE3-ARIN
OrgAbuseName: abuse
OrgAbusePhone: +1-800-900-0241
OrgAbuseEmail: abuse@verizon.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE3-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#