
21531 CTUSA-NET - Multiband
Adjacency: 3 Upstream: 1 Downstream: 2
Upstream Adjacent AS list
AS209 ASN-QWEST - Qwest
Downstream Adjacent AS list
AS26823 INTERCEPT1 - INTERCEPT CORPORATION
AS26671 SFG - Sammons Financial Group, Inc.
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 4288 AS21531 ORG+TRN Originate: 24576 /17.42 Transit: 512 /23.00 CTUSA-NET - Multiband
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 % 2631 AS21531 CTUSA-NET - Multiband 10 4 0 6 4 40.00% Prefix AS Path Aggregation Suggestion 65.163.107.0/24 4637 209 21531 65.164.216.0/21 4637 209 21531 199.165.217.0/24 4637 209 21531 204.153.160.0/23 4637 209 21531 207.70.192.0/18 4637 209 21531 207.70.212.0/24 4637 209 21531 - Withdrawn - matching aggregate 207.70.192.0/18 4637 209 21531 207.70.229.0/24 4637 209 21531 - Withdrawn - matching aggregate 207.70.192.0/18 4637 209 21531 207.70.237.0/24 4637 209 21531 - Withdrawn - matching aggregate 207.70.192.0/18 4637 209 21531 209.74.80.0/20 4637 209 21531 209.74.82.0/24 4637 209 21531 - Withdrawn - matching aggregate 209.74.80.0/20 4637 209 21531
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21531 8 More Specifics 10 Total Advertisements CTUSA-NET - Multiband
65.163.107.0/24 65.160.0.0/13
65.164.216.0/21 65.160.0.0/13
204.153.160.0/23 204.153.160.0/22
207.70.212.0/24 207.70.192.0/18
207.70.229.0/24 207.70.192.0/18
207.70.237.0/24 207.70.192.0/18
209.74.80.0/20 209.74.64.0/19
209.74.82.0/24 209.74.64.0/19
whois: 402603
IANA has recorded AS21531 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21531\n
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ASNumber: 21531
ASName: QLRASN-1
ASHandle: AS21531
RegDate: 2023-09-20
Updated: 2023-09-20
Ref: https://rdap.arin.net/registry/autnum/21531
OrgName: Quantum Leap Research LLC
OrgId: QLRL
Address: 940 Sycolin Rd SE
Address: Suite 110
City: Leesburg
StateProv: VA
PostalCode: 20175
Country: US
RegDate: 2023-08-23
Updated: 2026-02-05
Ref: https://rdap.arin.net/registry/entity/QLRL
OrgTechHandle: WRIGT1-ARIN
OrgTechName: Wright, Christopher
OrgTechPhone: +1-703-783-5203
OrgTechEmail: chrisw@ql-research.com
OrgTechRef: https://rdap.arin.net/registry/entity/WRIGT1-ARIN
OrgTechHandle: BENNE684-ARIN
OrgTechName: Bennett, Derrick
OrgTechPhone: +1-703-783-5203
OrgTechEmail: derrickb@ql-research.com
OrgTechRef: https://rdap.arin.net/registry/entity/BENNE684-ARIN
OrgAbuseHandle: BENNE684-ARIN
OrgAbuseName: Bennett, Derrick
OrgAbusePhone: +1-703-783-5203
OrgAbuseEmail: derrickb@ql-research.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/BENNE684-ARIN
OrgRoutingHandle: WRIGT1-ARIN
OrgRoutingName: Wright, Christopher
OrgRoutingPhone: +1-703-783-5203
OrgRoutingEmail: chrisw@ql-research.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/WRIGT1-ARIN
OrgRoutingHandle: BENNE684-ARIN
OrgRoutingName: Bennett, Derrick
OrgRoutingPhone: +1-703-783-5203
OrgRoutingEmail: derrickb@ql-research.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/BENNE684-ARIN
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# 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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