
1280 ISC-AS-1280 - Internet Systems Consortium, Inc., US
Adjacency: 5 Upstream: 2 Downstream: 3
Upstream Adjacent AS list
AS2914 NTT-DATA-2914 - NTT America, Inc., US
AS6939 HURRICANE - Hurricane Electric LLC, US
Downstream Adjacent AS list
AS3557 ISC-AS - Internet Systems Consortium, Inc., US
AS30133 ISC-F-AS - Internet Systems Consortium, Inc., US
AS24151 CNNIC-CRITICAL-AP China Internet Network Infomation Center, CN
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 6049 AS1280 ORG+TRN Originate: 25344 /17.37 Transit: 13568 /18.27 ISC-AS-1280 - Internet Systems Consortium, Inc., 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 % 975 AS1280 ISC-AS-1280 - Internet Systems Consortium, In 92 78 14 28 64 69.57% Prefix AS Path Aggregation Suggestion 149.20.0.0/23 4777 2497 2914 1280 + Announce - aggregate of 149.20.0.0/24 (4777 2497 2914 1280) and 149.20.1.0/24 (4777 2497 2914 1280) 149.20.0.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.1.0/24 (4777 2497 2914 1280) 149.20.1.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.0.0/24 (4777 2497 2914 1280) 149.20.6.0/24 4777 2497 2914 1280 149.20.7.0/24 4777 6939 1280 149.20.8.0/24 4777 6939 1280 149.20.10.0/24 4777 2497 2914 1280 149.20.12.0/22 4777 2497 2914 1280 + Announce - aggregate of 149.20.12.0/23 (4777 2497 2914 1280) and 149.20.14.0/23 (4777 2497 2914 1280) 149.20.12.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.13.0/24 (4777 2497 2914 1280) 149.20.13.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.12.0/24 (4777 2497 2914 1280) 149.20.14.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.15.0/24 (4777 2497 2914 1280) 149.20.15.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.14.0/24 (4777 2497 2914 1280) 149.20.16.0/20 4777 2497 2914 1280 + Announce - aggregate of 149.20.16.0/21 (4777 2497 2914 1280) and 149.20.24.0/21 (4777 2497 2914 1280) 149.20.16.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.17.0/24 (4777 2497 2914 1280) 149.20.17.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.16.0/24 (4777 2497 2914 1280) 149.20.18.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.19.0/24 (4777 2497 2914 1280) 149.20.19.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.18.0/24 (4777 2497 2914 1280) 149.20.20.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.21.0/24 (4777 2497 2914 1280) 149.20.21.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.20.0/24 (4777 2497 2914 1280) 149.20.22.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.23.0/24 (4777 2497 2914 1280) 149.20.23.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.22.0/24 (4777 2497 2914 1280) 149.20.24.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.25.0/24 (4777 2497 2914 1280) 149.20.25.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.24.0/24 (4777 2497 2914 1280) 149.20.26.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.27.0/24 (4777 2497 2914 1280) 149.20.27.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.26.0/24 (4777 2497 2914 1280) 149.20.28.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.29.0/24 (4777 2497 2914 1280) 149.20.29.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.28.0/24 (4777 2497 2914 1280) 149.20.30.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.31.0/24 (4777 2497 2914 1280) 149.20.31.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.30.0/24 (4777 2497 2914 1280) 149.20.32.0/20 4777 2497 2914 1280 + Announce - aggregate of 149.20.32.0/21 (4777 2497 2914 1280) and 149.20.40.0/21 (4777 2497 2914 1280) 149.20.32.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.33.0/24 (4777 2497 2914 1280) 149.20.33.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.32.0/24 (4777 2497 2914 1280) 149.20.34.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.35.0/24 (4777 2497 2914 1280) 149.20.35.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.34.0/24 (4777 2497 2914 1280) 149.20.36.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.37.0/24 (4777 2497 2914 1280) 149.20.37.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.36.0/24 (4777 2497 2914 1280) 149.20.38.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.39.0/24 (4777 2497 2914 1280) 149.20.39.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.38.0/24 (4777 2497 2914 1280) 149.20.40.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.41.0/24 (4777 2497 2914 1280) 149.20.41.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.40.0/24 (4777 2497 2914 1280) 149.20.42.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.43.0/24 (4777 2497 2914 1280) 149.20.43.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.42.0/24 (4777 2497 2914 1280) 149.20.44.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.45.0/24 (4777 2497 2914 1280) 149.20.45.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.44.0/24 (4777 2497 2914 1280) 149.20.46.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.47.0/24 (4777 2497 2914 1280) 149.20.47.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.46.0/24 (4777 2497 2914 1280) 149.20.48.0/22 4777 2497 2914 1280 + Announce - aggregate of 149.20.48.0/23 (4777 2497 2914 1280) and 149.20.50.0/23 (4777 2497 2914 1280) 149.20.48.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.49.0/24 (4777 2497 2914 1280) 149.20.49.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.48.0/24 (4777 2497 2914 1280) 149.20.50.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.51.0/24 (4777 2497 2914 1280) 149.20.51.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.50.0/24 (4777 2497 2914 1280) 149.20.52.0/23 4777 2497 2914 1280 + Announce - aggregate of 149.20.52.0/24 (4777 2497 2914 1280) and 149.20.53.0/24 (4777 2497 2914 1280) 149.20.52.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.53.0/24 (4777 2497 2914 1280) 149.20.53.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.52.0/24 (4777 2497 2914 1280) 149.20.54.0/24 4777 6939 1280 149.20.55.0/24 4777 2497 2914 1280 149.20.56.0/24 4777 2497 2914 1280 149.20.58.0/24 4777 2497 2914 1280 149.20.59.0/24 4777 6939 1280 149.20.60.0/23 4777 6939 1280 + Announce - aggregate of 149.20.60.0/24 (4777 6939 1280) and 149.20.61.0/24 (4777 6939 1280) 149.20.60.0/24 4777 6939 1280 - Withdrawn - aggregated with 149.20.61.0/24 (4777 6939 1280) 149.20.61.0/24 4777 6939 1280 - Withdrawn - aggregated with 149.20.60.0/24 (4777 6939 1280) 149.20.62.0/23 4777 2497 2914 1280 + Announce - aggregate of 149.20.62.0/24 (4777 2497 2914 1280) and 149.20.63.0/24 (4777 2497 2914 1280) 149.20.62.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.63.0/24 (4777 2497 2914 1280) 149.20.63.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.62.0/24 (4777 2497 2914 1280) 149.20.64.0/23 4777 2497 2914 1280 + Announce - aggregate of 149.20.64.0/24 (4777 2497 2914 1280) and 149.20.65.0/24 (4777 2497 2914 1280) 149.20.64.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.65.0/24 (4777 2497 2914 1280) 149.20.65.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.64.0/24 (4777 2497 2914 1280) 149.20.72.0/21 4777 2497 2914 1280 + Announce - aggregate of 149.20.72.0/22 (4777 2497 2914 1280) and 149.20.76.0/22 (4777 2497 2914 1280) 149.20.72.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.73.0/24 (4777 2497 2914 1280) 149.20.73.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.72.0/24 (4777 2497 2914 1280) 149.20.74.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.75.0/24 (4777 2497 2914 1280) 149.20.75.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.74.0/24 (4777 2497 2914 1280) 149.20.76.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.77.0/24 (4777 2497 2914 1280) 149.20.77.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.76.0/24 (4777 2497 2914 1280) 149.20.78.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.79.0/24 (4777 2497 2914 1280) 149.20.79.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.78.0/24 (4777 2497 2914 1280) 149.20.80.0/24 4777 2497 2914 1280 149.20.81.0/24 4777 6939 1280 149.20.82.0/23 4777 2497 2914 1280 + Announce - aggregate of 149.20.82.0/24 (4777 2497 2914 1280) and 149.20.83.0/24 (4777 2497 2914 1280) 149.20.82.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.83.0/24 (4777 2497 2914 1280) 149.20.83.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.82.0/24 (4777 2497 2914 1280) 149.20.84.0/22 4777 6939 1280 + Announce - aggregate of 149.20.84.0/23 (4777 6939 1280) and 149.20.86.0/23 (4777 6939 1280) 149.20.84.0/24 4777 6939 1280 - Withdrawn - aggregated with 149.20.85.0/24 (4777 6939 1280) 149.20.85.0/24 4777 6939 1280 - Withdrawn - aggregated with 149.20.84.0/24 (4777 6939 1280) 149.20.86.0/24 4777 6939 1280 - Withdrawn - aggregated with 149.20.87.0/24 (4777 6939 1280) 149.20.87.0/24 4777 6939 1280 - Withdrawn - aggregated with 149.20.86.0/24 (4777 6939 1280) 149.20.88.0/24 4777 2497 2914 1280 149.20.90.0/23 4777 2497 2914 1280 + Announce - aggregate of 149.20.90.0/24 (4777 2497 2914 1280) and 149.20.91.0/24 (4777 2497 2914 1280) 149.20.90.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.91.0/24 (4777 2497 2914 1280) 149.20.91.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.90.0/24 (4777 2497 2914 1280) 149.20.92.0/22 4777 2497 2914 1280 + Announce - aggregate of 149.20.92.0/23 (4777 2497 2914 1280) and 149.20.94.0/23 (4777 2497 2914 1280) 149.20.92.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.93.0/24 (4777 2497 2914 1280) 149.20.93.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.92.0/24 (4777 2497 2914 1280) 149.20.94.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.95.0/24 (4777 2497 2914 1280) 149.20.95.0/24 4777 2497 2914 1280 - Withdrawn - aggregated with 149.20.94.0/24 (4777 2497 2914 1280) 192.158.252.0/24 4777 6939 1280 204.152.184.0/21 4777 6939 1280 204.152.184.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.185.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.186.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.187.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.188.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.189.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.190.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280 204.152.191.0/24 4777 6939 1280 - Withdrawn - matching aggregate 204.152.184.0/21 4777 6939 1280
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS1280 89 More Specifics 92 Total Advertisements ISC-AS-1280 - Internet Systems Consortium, Inc., US
149.20.0.0/24 149.20.0.0/18
149.20.1.0/24 149.20.0.0/18
149.20.6.0/24 149.20.0.0/18
149.20.7.0/24 149.20.0.0/18
149.20.8.0/24 149.20.0.0/18
149.20.10.0/24 149.20.0.0/18
149.20.12.0/24 149.20.0.0/18
149.20.13.0/24 149.20.0.0/18
149.20.14.0/24 149.20.0.0/18
149.20.15.0/24 149.20.0.0/18
149.20.16.0/24 149.20.0.0/18
149.20.17.0/24 149.20.0.0/18
149.20.18.0/24 149.20.0.0/18
149.20.19.0/24 149.20.0.0/18
149.20.20.0/24 149.20.0.0/18
149.20.21.0/24 149.20.0.0/18
149.20.22.0/24 149.20.0.0/18
149.20.23.0/24 149.20.0.0/18
149.20.24.0/24 149.20.0.0/18
149.20.25.0/24 149.20.0.0/18
149.20.26.0/24 149.20.0.0/18
149.20.27.0/24 149.20.0.0/18
149.20.28.0/24 149.20.0.0/18
149.20.29.0/24 149.20.0.0/18
149.20.30.0/24 149.20.0.0/18
149.20.31.0/24 149.20.0.0/18
149.20.32.0/24 149.20.0.0/18
149.20.33.0/24 149.20.0.0/18
149.20.34.0/24 149.20.0.0/18
149.20.35.0/24 149.20.0.0/18
149.20.36.0/24 149.20.0.0/18
149.20.37.0/24 149.20.0.0/18
149.20.38.0/24 149.20.0.0/18
149.20.39.0/24 149.20.0.0/18
149.20.40.0/24 149.20.0.0/18
149.20.41.0/24 149.20.0.0/18
149.20.42.0/24 149.20.0.0/18
149.20.43.0/24 149.20.0.0/18
149.20.44.0/24 149.20.0.0/18
149.20.45.0/24 149.20.0.0/18
149.20.46.0/24 149.20.0.0/18
149.20.47.0/24 149.20.0.0/18
149.20.48.0/24 149.20.0.0/18
149.20.49.0/24 149.20.0.0/18
149.20.50.0/24 149.20.0.0/18
149.20.51.0/24 149.20.0.0/18
149.20.52.0/24 149.20.0.0/18
149.20.53.0/24 149.20.0.0/18
149.20.54.0/24 149.20.0.0/18
149.20.55.0/24 149.20.0.0/18
149.20.56.0/24 149.20.0.0/18
149.20.58.0/24 149.20.0.0/18
149.20.59.0/24 149.20.0.0/18
149.20.60.0/24 149.20.0.0/18
149.20.61.0/24 149.20.0.0/18
149.20.62.0/24 149.20.0.0/18
149.20.63.0/24 149.20.0.0/18
149.20.64.0/24 149.20.64.0/22
149.20.65.0/24 149.20.64.0/22
149.20.72.0/24 149.20.72.0/21
149.20.73.0/24 149.20.72.0/21
149.20.74.0/24 149.20.72.0/21
149.20.75.0/24 149.20.72.0/21
149.20.76.0/24 149.20.72.0/21
149.20.77.0/24 149.20.72.0/21
149.20.78.0/24 149.20.72.0/21
149.20.79.0/24 149.20.72.0/21
149.20.80.0/24 149.20.80.0/21
149.20.81.0/24 149.20.80.0/21
149.20.82.0/24 149.20.80.0/21
149.20.83.0/24 149.20.80.0/21
149.20.84.0/24 149.20.80.0/21
149.20.85.0/24 149.20.80.0/21
149.20.86.0/24 149.20.80.0/21
149.20.87.0/24 149.20.80.0/21
149.20.90.0/24 149.20.90.0/23
149.20.91.0/24 149.20.90.0/23
149.20.92.0/24 149.20.92.0/22
149.20.93.0/24 149.20.92.0/22
149.20.94.0/24 149.20.92.0/22
149.20.95.0/24 149.20.92.0/22
204.152.184.0/24 204.152.184.0/21
204.152.185.0/24 204.152.184.0/21
204.152.186.0/24 204.152.184.0/21
204.152.187.0/24 204.152.184.0/21
204.152.188.0/24 204.152.184.0/21
204.152.189.0/24 204.152.184.0/21
204.152.190.0/24 204.152.184.0/21
204.152.191.0/24 204.152.184.0/21
whois: 402332
IANA has recorded AS1280 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS1280\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: 1280
ASName: ISC-AS-1280
ASHandle: AS1280
RegDate: 1991-07-31
Updated: 2012-04-02
Ref: https://rdap.arin.net/registry/autnum/1280
OrgName: Internet Systems Consortium, Inc.
OrgId: ISC-94-Z
Address: PO Box 360
City: Newmarket
StateProv: NH
PostalCode: 03857
Country: US
RegDate: 2007-11-08
Updated: 2024-01-03
Ref: https://rdap.arin.net/registry/entity/ISC-94-Z
OrgTechHandle: BELLI82-ARIN
OrgTechName: Bellis, Ray
OrgTechPhone: +1-650-423-1300
OrgTechEmail: ray@isc.org
OrgTechRef: https://rdap.arin.net/registry/entity/BELLI82-ARIN
OrgTechHandle: ISCN-ARIN
OrgTechName: Internet Systems Consortium NOC
OrgTechPhone: +1-650-423-1310
OrgTechEmail: noc@isc.org
OrgTechRef: https://rdap.arin.net/registry/entity/ISCN-ARIN
OrgNOCHandle: ISCN-ARIN
OrgNOCName: Internet Systems Consortium NOC
OrgNOCPhone: +1-650-423-1310
OrgNOCEmail: noc@isc.org
OrgNOCRef: https://rdap.arin.net/registry/entity/ISCN-ARIN
OrgTechHandle: JSO127-ARIN
OrgTechName: Osborn, Jeffrey Scott
OrgTechPhone: +1-650-423-1449
OrgTechEmail: jeff@isc.org
OrgTechRef: https://rdap.arin.net/registry/entity/JSO127-ARIN
OrgAbuseHandle: ISCAT-ARIN
OrgAbuseName: Internet Systems Consortium Abuse Team
OrgAbusePhone: +1-650-423-1300
OrgAbuseEmail: abuse@isc.org
OrgAbuseRef: https://rdap.arin.net/registry/entity/ISCAT-ARIN
OrgTechHandle: RA15-ARIN
OrgTechName: Adams, Rick
OrgTechPhone: +1-703-255-5527
OrgTechEmail: rick@cello.net
OrgTechRef: https://rdap.arin.net/registry/entity/RA15-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.
#