
12129 123NET - Internet 123
Adjacency: 20 Upstream: 2 Downstream: 18
Upstream Adjacent AS list
AS3356 LEVEL3 Level 3 Communications
AS3561 SAVVIS - Savvis
Downstream Adjacent AS list
AS13683 AUTO-WARES-ASN - Auto-Wares Inc
AS10423 SPARTAN-NET - Spartan-Net
AS11115 BIZSERVE - Online Technologies Corp.
AS18541 CES-ARIN - Corporate Electronic Stationary, Inc.
AS19584 ADVANCED-NET - ADVANCED NET
AS19872 CUSTOM-76 - CUSTOM SOFTWARE INC
AS15154 SBBSNET - Specialized Bulletin Board Systems
AS14137 MIDMICH - MIDMICH.NET
AS21527 MOG-NET - Michigan Online Group
AS20471 MONCUR - Moncur Design
AS26834 DURA - Dura Automotive
AS26096 LODDEN - Lodden Services
AS6484 PWCI-AS - Pathway Computing, Inc
AS40234 RAPIDPARTS - Rapidparts, Inc.
AS23327 ITINET - ITI Inc.
AS8180 V2-VENTURES-SHUTTER-NET - V2 Ventures, LLC (dba ShutterNet)
AS7949 WMIS-AS - West Michigan Internet Services
AS11541 GREATLAKES - Great Lakes Internet
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 3140 AS12129 ORG+TRN Originate: 59136 /16.15 Transit: 229376 /14.19 123NET - Internet 123
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 % 4857 AS12129 123NET - Internet 123 17 2 1 16 1 5.88% Prefix AS Path Aggregation Suggestion 63.211.18.0/24 4637 3491 3561 12129 64.18.231.0/24 4637 3356 12129 64.18.234.0/23 4637 3356 12129 + Announce - aggregate of 64.18.234.0/24 (4637 3356 12129) and 64.18.235.0/24 (4637 3356 12129) 64.18.234.0/24 4637 3356 12129 - Withdrawn - aggregated with 64.18.235.0/24 (4637 3356 12129) 64.18.235.0/24 4637 3356 12129 - Withdrawn - aggregated with 64.18.234.0/24 (4637 3356 12129) 66.51.144.0/20 4637 3356 12129 66.103.224.0/19 4637 3356 12129 67.29.152.0/22 4637 3356 12129 69.39.64.0/19 4637 3356 12129 74.126.0.0/20 4637 3356 12129 205.208.132.0/23 4637 3356 12129 205.208.136.0/24 4637 3356 12129 208.69.120.0/21 4637 3356 12129 209.103.128.0/19 4637 3356 12129 209.124.32.0/19 4637 3356 12129 209.172.28.0/22 4637 3356 12129 216.150.224.0/20 4637 3356 12129 216.234.96.0/19 4637 3356 12129
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS12129 9 More Specifics 18 Total Advertisements 123NET - Internet 123
63.211.18.0/24 63.208.0.0/13
64.18.230.0/24 64.18.224.0/20
64.18.231.0/24 64.18.224.0/20
64.18.234.0/24 64.18.224.0/20
64.18.235.0/24 64.18.224.0/20
67.29.152.0/22 67.24.0.0/13
205.208.132.0/23 205.208.128.0/17
205.208.136.0/24 205.208.128.0/17
209.172.28.0/22 209.172.0.0/19
whois: 402603
IANA has recorded AS12129 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS12129\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
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# If you see inaccuracies in the results, please report at
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 12129
ASName: 123NET
ASHandle: AS12129
RegDate: 1999-03-30
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/12129
OrgName: 123.Net, Inc.
OrgId: NETIN-6
Address: 24700 Northwestern Hwy. STE 700
City: Southfield
StateProv: MI
PostalCode: 48075
Country: US
RegDate: 2010-11-19
Updated: 2017-01-28
Comment: Direct Abuse: +1.248.228.8200 or abuse@123.net
Ref: https://rdap.arin.net/registry/entity/NETIN-6
OrgAbuseHandle: RD1464-ARIN
OrgAbuseName: Duda, Ryan
OrgAbusePhone: +1-248-228-8200
OrgAbuseEmail: rpd@123.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/RD1464-ARIN
OrgTechHandle: JNO80-ARIN
OrgTechName: Nowlan, James
OrgTechPhone: +1-248-228-8200
OrgTechEmail: jnowlan@123.net
OrgTechRef: https://rdap.arin.net/registry/entity/JNO80-ARIN
OrgNOCHandle: RD1464-ARIN
OrgNOCName: Duda, Ryan
OrgNOCPhone: +1-248-228-8200
OrgNOCEmail: rpd@123.net
OrgNOCRef: https://rdap.arin.net/registry/entity/RD1464-ARIN
OrgTechHandle: RD1464-ARIN
OrgTechName: Duda, Ryan
OrgTechPhone: +1-248-228-8200
OrgTechEmail: rpd@123.net
OrgTechRef: https://rdap.arin.net/registry/entity/RD1464-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.
#