6303 BARCLAYS-CAPITAL - Barclays Capital, US
Adjacency: 5 Upstream: 4 Downstream: 1
Upstream Adjacent AS list
AS6461 ZAYO-6461 - Zayo Bandwidth, US
AS14733 AS14733 - Barclays Capital Inc., US
AS701 UUNET - Verizon Business, US
AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US
Downstream Adjacent AS list
AS14733 AS14733 - Barclays Capital Inc., US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 5948 AS6303 ORG+TRN Originate: 25856 /17.34 Transit: 2560 /20.68 BARCLAYS-CAPITAL - Barclays Capital, 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 % 3463 AS6303 BARCLAYS-CAPITAL - Barclays Capital, US 45 24 9 30 15 33.33% Prefix AS Path Aggregation Suggestion 63.78.242.0/24 4777 32787 6303 146.127.40.0/22 4777 2516 701 6303 146.127.40.0/23 4777 2516 701 6303 - Withdrawn - matching aggregate 146.127.40.0/22 4777 2516 701 6303 146.127.40.0/23 4777 32787 6303 + Announce - aggregate of 146.127.40.0/24 (4777 32787 6303) and 146.127.41.0/24 (4777 32787 6303) 146.127.40.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.41.0/24 (4777 32787 6303) 146.127.41.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.40.0/24 (4777 32787 6303) 146.127.60.0/23 4777 2516 701 6303 146.127.61.0/24 4777 32787 6303 146.127.222.0/23 4777 2516 701 6303 146.127.223.0/24 4777 32787 6303 146.127.224.0/20 4777 2516 701 6303 146.127.224.0/21 4777 2516 701 6303 - Withdrawn - matching aggregate 146.127.224.0/20 4777 2516 701 6303 146.127.224.0/22 4777 32787 6303 + Announce - aggregate of 146.127.224.0/23 (4777 32787 6303) and 146.127.226.0/23 (4777 32787 6303) 146.127.224.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.225.0/24 (4777 32787 6303) 146.127.225.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.224.0/24 (4777 32787 6303) 146.127.226.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.227.0/24 (4777 32787 6303) 146.127.227.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.226.0/24 (4777 32787 6303) 146.127.228.0/23 4777 32787 6303 + Announce - aggregate of 146.127.228.0/24 (4777 32787 6303) and 146.127.229.0/24 (4777 32787 6303) 146.127.228.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.229.0/24 (4777 32787 6303) 146.127.229.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.228.0/24 (4777 32787 6303) 146.127.240.0/21 4777 2516 701 18971 14733 6303 146.127.240.0/22 4777 2516 701 6303 146.127.240.0/22 4777 32787 6303 + Announce - aggregate of 146.127.240.0/23 (4777 32787 6303) and 146.127.242.0/23 (4777 32787 6303) 146.127.240.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.241.0/24 (4777 32787 6303) 146.127.241.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.240.0/24 (4777 32787 6303) 146.127.242.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.243.0/24 (4777 32787 6303) 146.127.243.0/24 4777 32787 6303 - Withdrawn - aggregated with 146.127.242.0/24 (4777 32787 6303) 146.127.244.0/22 4777 2516 701 6303 146.127.244.0/24 4777 32787 6303 146.127.246.0/24 4777 32787 6303 146.127.248.0/21 4777 2516 701 6303 157.83.142.0/23 4777 32787 6303 + Announce - aggregate of 157.83.142.0/24 (4777 32787 6303) and 157.83.143.0/24 (4777 32787 6303) 157.83.142.0/24 4777 32787 6303 - Withdrawn - aggregated with 157.83.143.0/24 (4777 32787 6303) 157.83.143.0/24 4777 32787 6303 - Withdrawn - aggregated with 157.83.142.0/24 (4777 32787 6303) 167.203.48.0/22 4777 2516 701 18971 14733 6303 167.203.48.0/23 4777 2516 701 6303 167.203.48.0/23 4777 32787 6303 + Announce - aggregate of 167.203.48.0/24 (4777 32787 6303) and 167.203.49.0/24 (4777 32787 6303) 167.203.48.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.49.0/24 (4777 32787 6303) 167.203.49.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.48.0/24 (4777 32787 6303) 167.203.50.0/23 4777 2516 701 6303 167.203.50.0/23 4777 32787 6303 + Announce - aggregate of 167.203.50.0/24 (4777 32787 6303) and 167.203.51.0/24 (4777 32787 6303) 167.203.50.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.51.0/24 (4777 32787 6303) 167.203.51.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.50.0/24 (4777 32787 6303) 167.203.60.0/23 4777 2516 701 6303 167.203.60.0/23 4777 32787 6303 + Announce - aggregate of 167.203.60.0/24 (4777 32787 6303) and 167.203.61.0/24 (4777 32787 6303) 167.203.60.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.61.0/24 (4777 32787 6303) 167.203.61.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.60.0/24 (4777 32787 6303) 167.203.62.0/23 4777 2516 701 6303 167.203.62.0/23 4777 32787 6303 + Announce - aggregate of 167.203.62.0/24 (4777 32787 6303) and 167.203.63.0/24 (4777 32787 6303) 167.203.62.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.63.0/24 (4777 32787 6303) 167.203.63.0/24 4777 32787 6303 - Withdrawn - aggregated with 167.203.62.0/24 (4777 32787 6303) 192.107.28.0/24 4777 32787 6303 192.147.56.0/23 4777 2516 701 6303 192.147.57.0/24 4777 32787 6303
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS6303 45 More Specifics 45 Total Advertisements BARCLAYS-CAPITAL - Barclays Capital, US
63.78.242.0/24 63.64.0.0/10
146.127.40.0/22 146.127.0.0/16
146.127.40.0/23 146.127.0.0/16
146.127.40.0/24 146.127.0.0/16
146.127.41.0/24 146.127.0.0/16
146.127.60.0/23 146.127.0.0/16
146.127.61.0/24 146.127.0.0/16
146.127.222.0/23 146.127.0.0/16
146.127.223.0/24 146.127.0.0/16
146.127.224.0/20 146.127.0.0/16
146.127.224.0/21 146.127.0.0/16
146.127.224.0/24 146.127.0.0/16
146.127.225.0/24 146.127.0.0/16
146.127.226.0/24 146.127.0.0/16
146.127.227.0/24 146.127.0.0/16
146.127.228.0/24 146.127.0.0/16
146.127.229.0/24 146.127.0.0/16
146.127.240.0/21 146.127.0.0/16
146.127.240.0/22 146.127.0.0/16
146.127.240.0/24 146.127.0.0/16
146.127.241.0/24 146.127.0.0/16
146.127.242.0/24 146.127.0.0/16
146.127.243.0/24 146.127.0.0/16
146.127.244.0/22 146.127.0.0/16
146.127.244.0/24 146.127.0.0/16
146.127.246.0/24 146.127.0.0/16
146.127.248.0/21 146.127.0.0/16
157.83.142.0/24 157.83.0.0/16
157.83.143.0/24 157.83.0.0/16
167.203.48.0/22 167.203.0.0/16
167.203.48.0/23 167.203.0.0/16
167.203.48.0/24 167.203.0.0/16
167.203.49.0/24 167.203.0.0/16
167.203.50.0/23 167.203.0.0/16
167.203.50.0/24 167.203.0.0/16
167.203.51.0/24 167.203.0.0/16
167.203.60.0/23 167.203.0.0/16
167.203.60.0/24 167.203.0.0/16
167.203.61.0/24 167.203.0.0/16
167.203.62.0/23 167.203.0.0/16
167.203.62.0/24 167.203.0.0/16
167.203.63.0/24 167.203.0.0/16
192.107.28.0/24 192.107.28.0/22
192.147.56.0/23 192.147.56.0/21
192.147.57.0/24 192.147.56.0/21
whois: 402603
IANA has recorded AS6303 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS6303\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.
#
ASNumber: 6303
ASName: BARCLAYS-CAPITAL
ASHandle: AS6303
RegDate: 1996-02-29
Updated: 2012-04-02
Ref: https://rdap.arin.net/registry/autnum/6303
OrgName: Barclays Capital
OrgId: BARCL-5-Z
Address: 745 7th Ave
City: New Yrok
StateProv: NY
PostalCode: 10019
Country: US
RegDate: 2009-06-01
Updated: 2025-07-21
Ref: https://rdap.arin.net/registry/entity/BARCL-5-Z
OrgNOCHandle: COA2-ARIN
OrgNOCName: Connectivity Operations America
OrgNOCPhone: +1-212-412-2820
OrgNOCEmail: gtisntconnectivity1@barclayscapital.com
OrgNOCRef: https://rdap.arin.net/registry/entity/COA2-ARIN
OrgTechHandle: COA2-ARIN
OrgTechName: Connectivity Operations America
OrgTechPhone: +1-212-412-2820
OrgTechEmail: gtisntconnectivity1@barclayscapital.com
OrgTechRef: https://rdap.arin.net/registry/entity/COA2-ARIN
OrgAbuseHandle: COA2-ARIN
OrgAbuseName: Connectivity Operations America
OrgAbusePhone: +1-212-412-2820
OrgAbuseEmail: gtisntconnectivity1@barclayscapital.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/COA2-ARIN
OrgRoutingHandle: COA2-ARIN
OrgRoutingName: Connectivity Operations America
OrgRoutingPhone: +1-212-412-2820
OrgRoutingEmail: gtisntconnectivity1@barclayscapital.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/COA2-ARIN
OrgDNSHandle: LEBED9-ARIN
OrgDNSName: Lebedinec, Dmitrij
OrgDNSPhone: + 44 7441462399
OrgDNSEmail: dmitrij.lebedinec@barclays.com
OrgDNSRef: https://rdap.arin.net/registry/entity/LEBED9-ARIN
OrgDNSHandle: COA2-ARIN
OrgDNSName: Connectivity Operations America
OrgDNSPhone: +1-212-412-2820
OrgDNSEmail: gtisntconnectivity1@barclayscapital.com
OrgDNSRef: https://rdap.arin.net/registry/entity/COA2-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.
#