
3378 MCI-ASN, US
Adjacency: 4 Upstream: 1 Downstream: 3
Upstream Adjacent AS list
AS701 UUNET, US
Downstream Adjacent AS list
AS3377 MCI-ASN, US
AS3372 MCI-ASN, US
AS3371 MCI-ASN, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 2901 AS3378 ORG+TRN Originate: 73728 /15.83 Transit: 2289664 /10.87 MCI-ASN, 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 % 15609 AS3378 MCI-ASN, US 38 4 2 36 2 5.26% Prefix AS Path Aggregation Suggestion 142.77.1.0/24 3257 701 3378 142.77.8.0/22 3257 701 3378 142.77.14.0/24 3257 701 3378 142.77.32.0/24 3257 701 3378 142.77.46.0/24 3257 701 3378 142.77.72.0/21 3257 701 3378 142.77.80.0/20 3257 701 3378 146.1.1.0/24 3257 701 3378 146.1.2.0/24 3257 701 3378 146.1.4.0/23 3257 701 3378 146.1.6.0/24 3257 701 3378 146.1.16.0/23 3257 701 3378 146.1.24.0/21 3257 701 3378 146.1.40.0/21 3257 701 3378 146.1.192.0/19 3257 701 3378 3378 3378 3378 159.24.64.0/20 3257 701 3378 159.98.72.0/21 3257 701 3378 159.98.104.0/21 6939 701 3378 159.98.112.0/22 6939 701 3378 162.47.128.0/20 3257 701 3378 162.47.144.0/22 6939 701 3378 + Announce - aggregate of 162.47.144.0/23 (6939 701 3378) and 162.47.146.0/23 (6939 701 3378) 162.47.144.0/23 6939 701 3378 - Withdrawn - aggregated with 162.47.146.0/23 (6939 701 3378) 162.47.146.0/23 6939 701 3378 - Withdrawn - aggregated with 162.47.144.0/23 (6939 701 3378) 165.122.128.0/20 6939 701 3378 166.34.64.0/18 2914 701 3378 166.38.96.0/19 3257 701 3378 166.38.132.0/23 3257 701 3378 166.38.136.0/23 3257 701 3378 198.168.54.0/24 6939 701 3378 198.168.73.0/24 6939 701 3378 199.249.16.0/20 3257 701 3378 3378 3378 199.249.18.0/24 6939 701 3378 199.249.19.0/24 3257 701 3378 199.249.20.0/24 3257 701 3378 199.249.21.0/24 6939 701 3378 199.249.22.0/23 6939 701 3378 + Announce - aggregate of 199.249.22.0/24 (6939 701 3378) and 199.249.23.0/24 (6939 701 3378) 199.249.22.0/24 6939 701 3378 - Withdrawn - aggregated with 199.249.23.0/24 (6939 701 3378) 199.249.23.0/24 6939 701 3378 - Withdrawn - aggregated with 199.249.22.0/24 (6939 701 3378) 199.249.29.0/24 6939 701 3378 205.150.160.0/22 3257 701 3378
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS3378 53 More Specifics 54 Total Advertisements MCI-ASN, 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
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
162.47.15.0/24 162.47.0.0/16
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
166.38.135.0/24 166.32.0.0/13
166.38.136.0/23 166.32.0.0/13
166.38.138.0/24 166.32.0.0/13
198.4.4.0/24 198.4.0.0/15
198.4.5.0/24 198.4.0.0/15
198.4.6.0/24 198.4.0.0/15
198.4.7.0/24 198.4.0.0/15
198.4.8.0/24 198.4.0.0/15
198.4.9.0/24 198.4.0.0/15
198.168.54.0/24 198.168.54.0/23
198.168.73.0/24 198.168.64.0/20
199.249.16.0/24 199.249.16.0/20
199.249.17.0/24 199.249.16.0/20
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
199.249.24.0/24 199.249.16.0/20
199.249.25.0/24 199.249.16.0/20
199.249.26.0/24 199.249.16.0/20
199.249.27.0/24 199.249.16.0/20
199.249.29.0/24 199.249.16.0/20
199.249.30.0/23 199.249.16.0/20
205.150.160.0/22 205.150.0.0/16
208.225.160.0/24 208.192.0.0/10
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 162.47.15.0/24 Announced
+ 199.249.25.0/24 Announced
+ 199.249.30.0/23 Announced
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/
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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: IPMGMT@verizon.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-mail@verizonbusiness.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.
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