20029 HCDL-DENVER-DATA-CENTER, US
Adjacency: 7 Upstream: 5 Downstream: 2
Upstream Adjacent AS list
AS3549 LVLT-3549, US
AS6939 HURRICANE, US
AS8002 STEALTH, US
AS3356 LEVEL3, US
AS6461 ZAYO-6461, US
Downstream Adjacent AS list
AS22179 LTS-CO01, US
AS394610 INCOMM-NET2, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 19197 AS20029 ORIGIN Originate: 3328 /20.30 Transit: 0 /0.00 HCDL-DENVER-DATA-CENTER, 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 % 21396 AS20029 HCDL-DENVER-DATA-CENTER, US 13 2 1 12 1 7.69% Prefix AS Path Aggregation Suggestion 64.129.78.0/24 3549 20029 69.67.152.0/24 6939 8002 20029 69.67.154.0/24 3549 20029 69.166.104.0/24 3549 20029 69.166.106.0/23 3549 20029 + Announce - aggregate of 69.166.106.0/24 (3549 20029) and 69.166.107.0/24 (3549 20029) 69.166.106.0/24 3549 20029 - Withdrawn - aggregated with 69.166.107.0/24 (3549 20029) 69.166.107.0/24 3549 20029 - Withdrawn - aggregated with 69.166.106.0/24 (3549 20029) 173.205.216.0/24 3549 20029 173.205.219.0/24 3549 20029 207.188.8.0/24 6939 20029 207.188.9.0/24 57866 3356 20029 207.188.13.0/24 3549 20029 207.188.14.0/24 3549 20029 207.188.15.0/24 2497 6461 20029
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS20029 15 More Specifics 16 Total Advertisements HCDL-DENVER-DATA-CENTER, US
64.129.78.0/24 64.128.0.0/15
69.67.152.0/24 69.67.152.0/22
69.67.153.0/24 69.67.152.0/22
69.67.154.0/24 69.67.152.0/22
69.166.104.0/24 69.166.104.0/22
69.166.105.0/24 69.166.104.0/22
69.166.106.0/24 69.166.104.0/22
69.166.107.0/24 69.166.104.0/22
173.205.216.0/24 173.205.216.0/22
173.205.219.0/24 173.205.216.0/22
207.188.8.0/24 207.188.8.0/21
207.188.9.0/24 207.188.8.0/21
207.188.13.0/24 207.188.8.0/21
207.188.14.0/24 207.188.8.0/21
207.188.15.0/24 207.188.8.0/21
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 69.166.105.0/24 Announced
whois: 402603
IANA has recorded AS20029 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS20029\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 20029
ASName: HCDL-DENVER-DATA-CENTER
ASHandle: AS20029
RegDate: 2001-03-16
Updated: 2023-08-31
Ref: https://rdap.arin.net/registry/autnum/20029
OrgName: H5 Data Centers
OrgId: HCDL
Address: 5350 South Valentia Way
City: Greenwood Village
StateProv: CO
PostalCode: 80111
Country: US
RegDate: 2014-04-04
Updated: 2023-12-06
Comment: www.h5datacenters.com
Ref: https://rdap.arin.net/registry/entity/HCDL
OrgAbuseHandle: ABUSE7435-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-303-714-7901
OrgAbuseEmail: abuse@h5datacenters.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE7435-ARIN
OrgTechHandle: LAYTO50-ARIN
OrgTechName: Collins, Layton A
OrgTechPhone: +1-513-607-2178
OrgTechEmail: layton.collins@h5datacenters.com
OrgTechRef: https://rdap.arin.net/registry/entity/LAYTO50-ARIN
OrgTechHandle: STELL97-ARIN
OrgTechName: Steller, Anthony
OrgTechPhone: +1-314-449-7145
OrgTechEmail: anthony.steller@h5datacenters.com
OrgTechRef: https://rdap.arin.net/registry/entity/STELL97-ARIN
OrgTechHandle: AYLUA-ARIN
OrgTechName: Ayluardo, Benjamin
OrgTechPhone: +1-303-714-7808
OrgTechEmail: benjamin.ayluardo@h5datacenters.com
OrgTechRef: https://rdap.arin.net/registry/entity/AYLUA-ARIN
OrgTechHandle: AYERS94-ARIN
OrgTechName: Ayers, Matt
OrgTechPhone: +1-314-449-7144
OrgTechEmail: matthew.ayers@h5datacenters.com
OrgTechRef: https://rdap.arin.net/registry/entity/AYERS94-ARIN
OrgTechHandle: LEGNO10-ARIN
OrgTechName: Legnon, Darron
OrgTechPhone: +1-303-714-6535
OrgTechEmail: darron.legnon@h5datacenters.com
OrgTechRef: https://rdap.arin.net/registry/entity/LEGNO10-ARIN
OrgTechHandle: DURBI29-ARIN
OrgTechName: Durbin, Mark
OrgTechPhone: +1-636-575-4456
OrgTechEmail: mark.durbin@h5datacenters.com
OrgTechRef: https://rdap.arin.net/registry/entity/DURBI29-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/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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