AS12129 123NET - 123.Net, Inc.
🇺🇸ARINassigned
Announced Prefixes (BGP)
62total
56 IPv46 IPv6
IPv4 Addresses
Allocated (RIR)110,080
Announced (BGP)183,552
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)8.4×10²⁸
Routing hygiene
Score 64/100 · High riskRPKI ROA coverage
59.7%
6 prefixes RPKI invalid
IRR route objects
9.7%
21 prefixes registered for another origin
Hijack signals
3
3 announced against others' ROAs, 0 own announced by others
Upstreams
4
diversity 35/100
- 40% of announced prefixes (25 of 62) have no valid ROA, 6 of them RPKI invalid
- Announces 3 prefixes that RPKI assigns to another network (possible hijack or misconfiguration)
- 90% of announced prefixes (56 of 62) have no IRR route object for this ASN
- 6 prefixes registered in IRR route objects for another active network and not authorized by a ROA
Based on 62 announced prefixes, updated daily (2026-10-22). How the score works · RPKI explained
Announced Prefixes
(BGP)62|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
37.221.109.0/24MOAS | Invalid | - | - |
| Valid | - | - | |
| Valid | - | - | |
66.54.96.0/22MOAS | No ROA | - | - |
| Valid | - | - | |
| Valid | - | - | |
| Valid | - | - | |
| No ROA | - | - | |
| No ROA | - | - | |
| No ROA | - | - |
1-10 of 62
1 / 7
Allocated Prefixes
(RIR)28Prefix | Country | RIR | Status |
|---|---|---|---|
| 37.221.109.0/24 | 🇺🇸 US | RIPE | assigned |
| 65.183.160.0/19 | 🇺🇸 US | ARIN | allocated |
| 66.51.144.0/20 | 🇺🇸 US | ARIN | allocated |
| 66.54.96.0/22 | 🇺🇸 US | ARIN | allocated |
| 66.103.224.0/19 | 🇺🇸 US | ARIN | allocated |
| 67.214.112.0/20 | 🇺🇸 US | ARIN | allocated |
| 69.39.64.0/19 | 🇺🇸 US | ARIN | allocated |
| 74.126.0.0/19 | 🇺🇸 US | ARIN | allocated |
| 130.51.212.0/22 | 🇺🇸 US | ARIN | allocated |
| 147.189.140.0/24 | 🇺🇸 US | RIPE | assigned |
1-10 of 28
1 / 3
All 62 announced prefixes of AS12129 →
Downstream Customers(7)
BGP Neighbours
(seen in AS paths)Upstreams (4)
Networks AS12129 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (92)
Networks whose own prefixes AS12129 passes on: usually its customers.
- AS27216Air Advantage79
- AS14938Bullseye Telecom43
- AS401307Michigan Statewide Educational Network40
- AS22379Manifold Services25
- AS21527Daystarr Communications23
- AS32477Otava21
- AS19901Brightspeed15
- AS393474St. Clair County Regional Educational Service Agency13
- AS19224Quantum Services Group12
- AS11115Otava11
- AS32002RackGenius10
- AS54932M3 Wireless10
- AS17143Winn Telecom9
- AS13737Interconnecx8
- AS14374Agri Valley Services Corporation8
- AS393256DTE Energy Company8
- AS2015Msen7
- AS16939CARETECH SOLUTIONS7
- AS19031CU*Answers6
- AS62611Cutting Edge Computers6
- AS5758ALPHA ENTERPRISES LIMITED5
- AS15154Network Services Group5
- AS22878ACENET5
- AS54178Urban Science Applications5
- AS394678Bluewater Power Corporation5
- AS267Nether.Net4
- AS8134Baraga Telephone Company4
- AS363493Essentials4
- AS40089Bullhorn4
- AS53352Henry Ford Health System4
- AS398351May Mobility4
- AS931Hyonix3
- AS10423STELLAR Broadband3
- AS13549Mercury Network Corporation3
- AS16556TotalChoice Hosting3
- AS40956Northwood University3
- AS46670MARKETING ASSOCIATES3
- AS215129Wodarek Productions3
- AS399308UFP Industries3
- AS1074Production Networks2
- AS14711INGERSOLL CUTTING TOOL COMPANY2
- AS19239KLA Corporation2
- AS22585MVS Cloud2
- AS32605BraveSoftTech2
- AS36127Miller Canfield2
- AS46569Walsh College Of Accountancy And Business Administration2
- AS54163AHOSTING2
- AS54840United Wholesale Mortgage2
- AS62606Sector 72
- AS63126Aptient Consulting Group2
- AS64223MITCON2
- AS393483Yeo & Yeo CPAs & Business Consultants2
- AS395813Michigan Central Innovation District2
- AS401313Novacoast2
- AS402385Spicer2
- AS1021CV Tech1
- AS3389Ford Motor Company1
- AS5740WorkForce Software1
- AS12088North American Bancard1
- AS19748Sector Link1
- AS22526ITC Holdings1
- AS22802Amerisure Mutual Insurance Company1
- AS22941The HelpDesk1
- AS26364RDV Corporation1
- AS31923The Auto Club Group1
- AS33418Detroit Community Technology Project1
- AS33488Providence Park Medical Building Group1
- AS36197Computer Data1
- AS40234Rapidparts1
- AS40599Gentex Corporation1
- AS46492Southwestern Michigan College1
- AS53505Huntington Place1
- AS54373Message Express Internet1
- AS54542K Data Systems1
- AS55269Critical Signal Technologies1
- AS212132EG Evolution Latvia SIA1
- AS393665Baker College1
- AS394004Hurley Medical Center1
- AS394160Advanced Radiology Services, P.C1
- AS394289Hope College1
- AS394398Client Financial Services Of Michigan1
- AS394952Lake Michigan Credit Union1
- AS397085Signal Restoration Services1
- AS397282Castle VPN1
- AS397678Red Rock Information Security1
- AS398226Henniges Automotive Holdings1
- AS398233IVSComm1
- AS398953ABC Warehouse1
- AS399293Hollingsworth Logistics Group1
- AS399593DWIHN1
- AS399741BAE Networks1
- AS401215MITCHELL PLASTICS1
Other adjacent networks (6)
Adjacent to AS12129 in the transit part of AS paths: peers, providers or customers.
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/12129Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/12129" | jq