19254 KOCH-INDUSTRIES, US
Adjacency: 6 Upstream: 6 Downstream: 0
Upstream Adjacent AS list
AS3257 GTT-BACKBONE GTT, US
AS4637 ASN-TELSTRA-GLOBAL Telstra Global, HK
AS13335 CLOUDFLARENET, US
AS7018 ATT-INTERNET4, US
AS3356 LEVEL3, US
AS6461 ZAYO-6461, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 4971 AS19254 ORIGIN Originate: 37376 /16.81 Transit: 0 /0.00 KOCH-INDUSTRIES, 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 % 2653 AS19254 KOCH-INDUSTRIES, US 41 28 7 20 21 51.22% Prefix AS Path Aggregation Suggestion 146.209.128.0/20 57866 3356 19254 146.209.144.0/22 57866 3356 19254 146.209.148.0/22 57866 13335 19254 + Announce - aggregate of 146.209.148.0/23 (57866 13335 19254) and 146.209.150.0/23 (57866 13335 19254) 146.209.148.0/24 57866 13335 19254 - Withdrawn - aggregated with 146.209.149.0/24 (57866 13335 19254) 146.209.149.0/24 57866 13335 19254 - Withdrawn - aggregated with 146.209.148.0/24 (57866 13335 19254) 146.209.150.0/24 57866 13335 19254 - Withdrawn - aggregated with 146.209.151.0/24 (57866 13335 19254) 146.209.151.0/24 57866 13335 19254 - Withdrawn - aggregated with 146.209.150.0/24 (57866 13335 19254) 146.209.152.0/21 57866 3356 19254 146.209.159.0/24 57866 3356 19254 - Withdrawn - matching aggregate 146.209.152.0/21 57866 3356 19254 146.209.222.0/23 57866 13335 19254 + Announce - aggregate of 146.209.222.0/24 (57866 13335 19254) and 146.209.223.0/24 (57866 13335 19254) 146.209.222.0/24 57866 13335 19254 - Withdrawn - aggregated with 146.209.223.0/24 (57866 13335 19254) 146.209.223.0/24 57866 13335 19254 - Withdrawn - aggregated with 146.209.222.0/24 (57866 13335 19254) 146.209.224.0/23 6939 3356 19254 146.209.224.0/23 57866 3356 19254 + Announce - aggregate of 146.209.224.0/24 (57866 3356 19254) and 146.209.225.0/24 (57866 3356 19254) 146.209.224.0/24 57866 3356 19254 - Withdrawn - aggregated with 146.209.225.0/24 (57866 3356 19254) 146.209.225.0/24 57866 3356 19254 - Withdrawn - aggregated with 146.209.224.0/24 (57866 3356 19254) 146.209.232.0/24 57866 3356 19254 151.123.64.0/20 57866 3356 19254 + Announce - aggregate of 151.123.64.0/21 (57866 3356 19254) and 151.123.72.0/21 (57866 3356 19254) 151.123.64.0/21 57866 3356 19254 - Withdrawn - aggregated with 151.123.72.0/21 (57866 3356 19254) 151.123.64.0/22 57866 3356 19254 - Withdrawn - matching aggregate 151.123.64.0/21 57866 3356 19254 151.123.68.0/22 57866 3356 19254 - Withdrawn - matching aggregate 151.123.64.0/21 57866 3356 19254 151.123.71.0/24 57866 3356 19254 - Withdrawn - matching aggregate 151.123.64.0/21 57866 3356 19254 151.123.72.0/21 57866 3356 19254 - Withdrawn - aggregated with 151.123.64.0/21 (57866 3356 19254) 151.123.72.0/22 57866 3356 19254 - Withdrawn - matching aggregate 151.123.72.0/21 57866 3356 19254 151.123.76.0/22 57866 3356 19254 - Withdrawn - matching aggregate 151.123.72.0/21 57866 3356 19254 151.123.80.0/21 6939 3356 19254 151.123.80.0/21 57866 3356 19254 + Announce - aggregate of 151.123.80.0/22 (57866 3356 19254) and 151.123.84.0/22 (57866 3356 19254) 151.123.80.0/22 57866 3356 19254 - Withdrawn - aggregated with 151.123.84.0/22 (57866 3356 19254) 151.123.84.0/22 57866 3356 19254 - Withdrawn - aggregated with 151.123.80.0/22 (57866 3356 19254) 151.123.87.0/24 6939 3356 19254 151.123.88.0/21 7018 19254 151.123.88.0/22 7018 19254 - Withdrawn - matching aggregate 151.123.88.0/21 7018 19254 151.123.92.0/22 7018 19254 - Withdrawn - matching aggregate 151.123.88.0/21 7018 19254 151.123.95.0/24 7018 19254 - Withdrawn - matching aggregate 151.123.88.0/21 7018 19254 151.123.126.0/24 3257 19254 198.178.69.0/24 6939 4637 19254 198.178.78.0/23 57866 3356 19254 198.178.78.0/24 57866 3356 19254 - Withdrawn - matching aggregate 198.178.78.0/23 57866 3356 19254 205.132.112.0/21 7018 19254 205.132.112.0/22 7018 19254 - Withdrawn - matching aggregate 205.132.112.0/21 7018 19254 205.132.116.0/22 7018 19254 - Withdrawn - matching aggregate 205.132.112.0/21 7018 19254 206.220.176.0/21 6939 3356 19254 206.220.176.0/21 57866 3356 19254 + Announce - aggregate of 206.220.176.0/22 (57866 3356 19254) and 206.220.180.0/22 (57866 3356 19254) 206.220.176.0/22 57866 3356 19254 - Withdrawn - aggregated with 206.220.180.0/22 (57866 3356 19254) 206.220.176.0/23 57866 13335 19254 + Announce - aggregate of 206.220.176.0/24 (57866 13335 19254) and 206.220.177.0/24 (57866 13335 19254) 206.220.176.0/24 57866 13335 19254 - Withdrawn - aggregated with 206.220.177.0/24 (57866 13335 19254) 206.220.177.0/24 57866 13335 19254 - Withdrawn - aggregated with 206.220.176.0/24 (57866 13335 19254) 206.220.180.0/22 57866 3356 19254 - Withdrawn - aggregated with 206.220.176.0/22 (57866 3356 19254)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS19254 35 More Specifics 37 Total Advertisements KOCH-INDUSTRIES, US
146.209.128.0/20 146.209.0.0/16
146.209.144.0/22 146.209.0.0/16
146.209.148.0/24 146.209.0.0/16
146.209.149.0/24 146.209.0.0/16
146.209.150.0/24 146.209.0.0/16
146.209.151.0/24 146.209.0.0/16
146.209.152.0/21 146.209.0.0/16
146.209.222.0/24 146.209.0.0/16
146.209.223.0/24 146.209.0.0/16
146.209.224.0/23 146.209.0.0/16
146.209.224.0/24 146.209.0.0/16
146.209.225.0/24 146.209.0.0/16
146.209.232.0/24 146.209.0.0/16
151.123.64.0/21 151.123.0.0/16
151.123.64.0/22 151.123.0.0/16
151.123.68.0/22 151.123.0.0/16
151.123.72.0/21 151.123.0.0/16
151.123.72.0/22 151.123.0.0/16
151.123.76.0/22 151.123.0.0/16
151.123.80.0/21 151.123.0.0/16
151.123.80.0/22 151.123.0.0/16
151.123.84.0/22 151.123.0.0/16
151.123.87.0/24 151.123.0.0/16
151.123.88.0/21 151.123.0.0/16
151.123.88.0/22 151.123.0.0/16
151.123.92.0/22 151.123.0.0/16
151.123.95.0/24 151.123.0.0/16
151.123.132.0/24 151.123.0.0/16
198.178.69.0/24 198.178.64.0/19
205.132.112.0/22 205.132.112.0/21
205.132.116.0/22 205.132.112.0/21
206.220.176.0/22 206.220.176.0/21
206.220.176.0/24 206.220.176.0/21
206.220.177.0/24 206.220.176.0/21
206.220.180.0/22 206.220.176.0/21
146.209.159.0/24 146.209.0.0/16
151.123.71.0/24 151.123.0.0/16
Prefixes added and withdrawn by this origin AS in the past 7 days.
- 146.209.159.0/24 Withdrawn
- 151.123.71.0/24 Withdrawn
whois: 402603
IANA has recorded AS19254 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS19254\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/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
ASNumber: 19254
ASName: KOCH-INDUSTRIES
ASHandle: AS19254
RegDate: 2019-08-02
Updated: 2019-08-02
Ref: https://rdap.arin.net/registry/autnum/19254
OrgName: Koch Industries, Inc.
OrgId: KOCHIN
Address: 4111 E 37th N
City: Wichita
StateProv: KS
PostalCode: 67220
Country: US
RegDate: 1994-12-02
Updated: 2019-07-30
Ref: https://rdap.arin.net/registry/entity/KOCHIN
OrgTechHandle: IK49-ARIN
OrgTechName: Koch Industries Inc
OrgTechPhone: +1-316-828-4222
OrgTechEmail: brandon.long@kbslp.com
OrgTechRef: https://rdap.arin.net/registry/entity/IK49-ARIN
OrgAbuseHandle: IK49-ARIN
OrgAbuseName: Koch Industries Inc
OrgAbusePhone: +1-316-828-4222
OrgAbuseEmail: brandon.long@kbslp.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/IK49-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.
#