ResearchIRR · RADB

AS-C1 CyrusOne and downstream customer ASNs

An as-set registered in RADB, maintained by MAINT-AS62. It names 207 ASes and 0 sets directly; followed all the way down, it reaches 207 ASes through 0 nested sets.

Members

What AS-C1 lists

207 ASes and 0 sets, written in the object across every registry that holds it. Sets open their own page.

AS19 LEIDOS-ASAS62 CONEAS72 SCHLUMBERGER-ASAS125 HI-NET-ASAS2165 HPINCAS2567 SLB-WESTERNGECO-ASAS2712 HALLIBURTON COMPANYAS2723 ENDURANCEAS3828 CIRRUSAS4891 PORTO-18-4891AS6977 AS-LAYERSWITCHAS7163 NYLI-ASAS7838 USAAAS8119 DTN-ASAS10511 COUNTRY-INSURANCEAS10723 MGL-40-ASNAS10848 NTTDATAAS11189 CFL-AS1AS11262 WH-TRADINGAS11690 COGNIZANT-USAS12007 RAYASNAS12027 HYTRON-CAAS13782 FAFCOAS14032 FOOT-LOCKER-CORPORATE-SERVICESAS14742 INTERNAP-BLOCK-4AS14862 OCEANEERINGAS15003 LEASEWEBAS15310 CITGOPETROLEUMAS16391 CELITO-1AS16477 NCL-203-16477AS16525 KBRAS16636 CWF-ASN-BGPAS16678 AUSRADAS16991 CBTS-AS-DC1AS17038 FLORI-62AS17121 KGBCORPASNAS17350 MOODYSAS17374 WALMARTAS17377 SPECTRA-2AS17466 GENPACT-AS-APAS18546 ACN-NADCAS18594 MERCHANT-SOLUTIONS-18594AS18649 ST-DALAS18676 AVAYAAS18689 GWYNN-GROUP-INCAS18692 NEUBERGERAS18701 PPCO-USAS18996 CITY-OF-BAYTOWNAS19137 EPSILON-INTERACTIVEAS19311 STEWART-1AS19325 SMCC-BGP-ASNAS19384 GRAMTEL001AS19479 CERVALISAS19606 NLSNMEDIAAS19787 FEIM-LLCAS19857 BEFCORPAS19860 OPTIV-US-AS1AS19961 STARGAS-NET-1AS20013 CYRUSONEAS20333 OPSUS-NET
Show 147 more
AS20339 RR-CENTRALAS20416 PRYSMIAN-01AS21945 HARLANDCLARKE-ASAS21961 JBSHOLDINGUSAAS22104 GELBAS22334 FERGUSONAS22575 MASSMUTUAL2AS22578 US-KONTIKI-3AS22688 DOLGENCORPAS22717 HALLIBURTONAS22775 MOORECAPAS23010 FFHSJAS23165 BPAS-01AS23426 FORVIS-LLPAS23446AS23463 LONEPINECAPITALAS23530 RDX-NA-DC-AS1AS25765 CQGNET-NEWYORKAS25836 STERLING-JEWELERSAS25889 BXS-NET-ASAS25907 BRINKER-INTAS25938 SOROS-FUND-MANAS25945 CBSNSOC-LRAS25955 PROSKAUER-1AS26234 VERIF-MSO-PCAS26512 BMSL-2-ARINAS26513 TGS-ASN-01AS26646 TRAVELCLICKCORP1AS26705 WBNET-01AS26716 NETCRACKERAS26940 LEVI-STRAUSS-COAS27383AS29952 XVAND-ISUTILITYAS29954 JLL-AM-CHIAS30023 CYRUSONE-CINAS30036 MEDIACOM-ENTERPRISE-BUSINESSAS30059 ZIMCOMAS30175 EPICORAS30246 CYRUSONE-CIN2AS30347 IBERIABANKLFYAS30423 AMEDI-3-ASN1AS30491 CROWELLPAS30673 NTHRIVE-ASN01AS31966 CSAA-INSURANCE-EXCHANGEAS32076 PXDNETAS32382 ATOS-CARROLLTONAS32402 ASN-TOWERAS32418 AS-IMAGINATIONETAS32427 AUNTMILLIES01AS32457 AS32457AS32462 TMARZETTIAS32857 COLO5AS33016 SMFE-BBAS33365 CINFIN-ASN-01AS35934 REPUBLIC-SERVICES-INCAS36050 FLOKYAS36111 BRINKS-INC-INTERNETAS36236 NETACTUATEAS36328AS36607 ACMAS40062 ASCENDLEARNINGAS40666 SABIC-INNOVATIVE-PLASTICS-US-LLCAS40708 ELAB-ASNAS40740 MASSMUTUALNETWORKAS46202 MICHAELS-ATT-DS3AS46204 MWEAS46282 AVIALL-SERVICES-INCAS46437 FOURWAYAS46606 UNIFIEDLAYER-AS-1AS46608 RENAISSANCE-INVESTMENT-MANAGEMENTAS46696 DATACANOPY-C1-DFW1AS46784 DPWAS46903 AS-RCH1-1AS47523AS49362 DSVAS53305 TNA-124-53305AS53396 STRACAS53542 MESNETAS53559 ANONYMIZERAS53562 DRIVETIMEAS53736 NUTANIX-ITAS53741 AS53741AS54076 NAVEX-IT-HOSTINGAS54426 TOSAAS54554 TIG-ASAS54635 BATESVILLEAS54775 ALLY-FINANCIALAS54963 LUMENETAS60269 XYLEMINC-ASAS62467 TXNETAS62529 AS-APEXAS62598 REI-TELAS62659 Q2HOLDINGSAS62680 CBJ-JUNEAU-AKAS62872 CBTS-AS-DC2AS62964AS63011 RCG-ASNAS63044 CMCAS63321 AS-RACAS63455 AS63455AS63474 SIRIUS-DATACENTERSAS65465AS393252 MCCARTHY-HOLDINGS-INCAS393463 GAF-TOTOWA-65-223-143-0AS393520 FTSC-HQAS393571 ALLCOVERED-EAST1-ASAS393587 ULTATGAS393759 CITY-OF-AUSTINAS393793 AS-C3CPAS393832 AS-FMBAS393842 ASN-CC1AS393924 RIGNET-ISPAS393961 FBB-INTERNET-IDAS393976 FUJ-HYBRIDIT-K5AS394122 DEBEVOISEAS394302 IAD-COLOAS394481 MFBNASAS395069 IBC-SA-TESOROAS395161 CONEXUM-INCAS395268 INSPERITYAS395273 CBAD-EHCSAS395288 COLLIN-EDUAS395533 ECSL-9AS396041 HFC-ASNAS396285 CBTS-AS-FGAAS396290 NCL-203-396290AS396333 CYWEST-COMMUNICATIONSAS396361AS396497 CENTRETECH-AS-1AS396838 HADVAS396936 HTH2AS396940 HTH1AS397325 DATACANOPYAS397374 AS-LOANSCIENCEAS397768 MEDSTARAS397843 ESPAS397941 TMHCC-PUBLIC-ASN-01AS398381 DC-ASNAS398409 ESPVAAS398492 MPM-ASNAS399110 DATACANOPY-DB-HOU3AS399319 SUPERIOR-PLUSAS399604 ES10-08873-01AS400537 AS-CHI-AURORAAS400615 DATACANOPY-C1-NVA5AS401237 CVR-ENERGYAS401985 AS-FDML-1
Expanded

Every AS it reaches

What a filter built from AS-C1 would let in: 207 ASes.

Show the 207 ASes
AS19AS62AS72AS125AS2165AS2567AS2712AS2723AS3828AS4891AS6977AS7163AS7838AS8119AS10511AS10723AS10848AS11189AS11262AS11690AS12007AS12027AS13782AS14032AS14742AS14862AS15003AS15310AS16391AS16477AS16525AS16636AS16678AS16991AS17038AS17121AS17350AS17374AS17377AS17466AS18546AS18594AS18649AS18676AS18689AS18692AS18701AS18996AS19137AS19311AS19325AS19384AS19479AS19606AS19787AS19857AS19860AS19961AS20013AS20333AS20339AS20416AS21945AS21961AS22104AS22334AS22575AS22578AS22688AS22717AS22775AS23010AS23165AS23426AS23446AS23463AS23530AS25765AS25836AS25889AS25907AS25938AS25945AS25955AS26234AS26512AS26513AS26646AS26705AS26716AS26940AS27383AS29952AS29954AS30023AS30036AS30059AS30175AS30246AS30347AS30423AS30491AS30673AS31966AS32076AS32382AS32402AS32418AS32427AS32457AS32462AS32857AS33016AS33365AS35934AS36050AS36111AS36236AS36328AS36607AS40062AS40666AS40708AS40740AS46202AS46204AS46282AS46437AS46606AS46608AS46696AS46784AS46903AS47523AS49362AS53305AS53396AS53542AS53559AS53562AS53736AS53741AS54076AS54426AS54554AS54635AS54775AS54963AS60269AS62467AS62529AS62598AS62659AS62680AS62872AS62964AS63011AS63044AS63321AS63455AS63474AS65465AS393252AS393463AS393520AS393571AS393587AS393759AS393793AS393832AS393842AS393924AS393961AS393976AS394122AS394302AS394481AS395069AS395161AS395268AS395273AS395288AS395533AS396041AS396285AS396290AS396333AS396361AS396497AS396838AS396936AS396940AS397325AS397374AS397768AS397843AS397941AS398381AS398409AS398492AS399110AS399319AS399604AS400537AS400615AS401237AS401985
Prefixes

What AS-C1 covers

Every route object in the IRR whose origin is one of the 207 ASes it reaches: the prefixes a filter built from AS-C1 (with bgpq4, say) would allow. 6,510 IPv4 and 1,535 IPv6. Every one is in the IRR API.

6,510 IPv4 prefixesthe first 1,000 listed
1.232.49.0/24100.42.48.0/20100.42.48.0/21100.42.48.0/24100.42.49.0/24100.42.50.0/24100.42.51.0/24100.42.52.0/24100.42.53.0/24100.42.54.0/24100.42.55.0/24100.42.56.0/24100.42.57.0/24100.42.58.0/23100.42.58.0/24100.42.59.0/24100.42.60.0/22100.42.60.0/24100.42.61.0/24100.42.62.0/24100.42.63.0/24102.213.152.0/22102.213.152.0/23102.213.153.0/24102.67.164.0/22102.67.164.0/23102.67.165.0/24102.67.166.0/23102.67.166.0/24102.67.167.0/24103.136.149.0/24103.175.78.0/24103.195.184.0/23103.195.184.0/24103.195.185.0/24103.195.186.0/24103.211.216.0/23103.211.216.0/24103.211.217.0/24103.211.218.0/23103.211.218.0/24103.211.219.0/24103.224.22.0/24103.232.224.0/24103.254.160.0/22103.30.213.0/24103.35.217.0/24103.50.160.0/22103.50.160.0/23103.50.160.0/24103.50.161.0/24103.50.162.0/23103.50.162.0/24103.50.163.0/24103.53.40.0/22103.53.40.0/23103.53.40.0/24103.53.41.0/24103.53.42.0/23103.53.42.0/24103.53.43.0/24103.6.84.0/22103.6.84.0/24103.6.85.0/24103.6.86.0/24103.6.87.0/24103.71.92.0/24103.76.228.0/22103.76.228.0/23103.76.228.0/24103.76.229.0/24103.76.230.0/23103.76.230.0/24103.76.231.0/24103.84.152.0/22103.84.152.0/24103.84.153.0/24103.84.154.0/24103.84.155.0/24104.129.68.0/24104.152.64.0/21104.152.64.0/24104.152.65.0/24104.152.66.0/24104.152.67.0/24104.152.68.0/24104.152.69.0/24104.152.70.0/24104.152.71.0/24104.153.92.0/23104.153.92.0/24104.153.93.0/24104.160.240.0/22104.160.240.0/24104.160.80.0/20104.166.107.0/24104.166.123.0/24104.166.126.0/24104.166.192.0/18104.166.192.0/20104.166.208.0/20104.166.224.0/20104.166.240.0/20104.167.240.0/24104.167.243.0/24104.171.0.0/20104.171.0.0/21104.171.0.0/24104.171.1.0/24104.171.10.0/23104.171.10.0/24104.171.11.0/24104.171.13.0/24104.171.14.0/24104.171.15.0/24104.171.2.0/24104.171.3.0/24104.171.4.0/24104.171.5.0/24104.171.6.0/24104.171.7.0/24104.171.8.0/24104.193.232.0/24104.193.234.0/24104.193.235.0/24104.194.26.0/24104.201.100.0/24104.201.101.0/24104.201.102.0/24104.201.103.0/24104.201.104.0/24104.201.105.0/24104.201.106.0/24104.201.107.0/24104.201.108.0/24104.201.109.0/24104.201.110.0/24104.201.111.0/24104.201.112.0/24104.201.113.0/24104.201.114.0/24104.201.115.0/24104.201.116.0/24104.201.117.0/24104.201.118.0/24104.201.119.0/24104.201.120.0/24104.201.121.0/24104.201.122.0/24104.201.123.0/24104.201.124.0/24104.201.125.0/24104.201.126.0/24104.201.127.0/24104.201.64.0/18104.201.64.0/24104.201.65.0/24104.201.66.0/24104.201.67.0/24104.201.68.0/24104.201.69.0/24104.201.70.0/24104.201.71.0/24104.201.72.0/24104.201.73.0/24104.201.74.0/24104.201.75.0/24104.201.76.0/24104.201.77.0/24104.201.78.0/24104.201.79.0/24104.201.80.0/24104.201.81.0/24104.201.82.0/24104.201.83.0/24104.201.84.0/24104.201.85.0/24104.201.86.0/24104.201.87.0/24104.201.88.0/24104.201.89.0/24104.201.90.0/24104.201.91.0/24104.201.92.0/24104.201.93.0/24104.201.94.0/24104.201.95.0/24104.201.96.0/24104.201.97.0/24104.201.98.0/24104.201.99.0/24104.218.32.0/22104.222.142.0/24104.222.223.0/24104.225.0.0/17104.225.0.0/22104.225.1.0/24104.225.100.0/24104.225.102.0/23104.225.102.0/24104.225.103.0/24104.225.104.0/24104.225.106.0/23104.225.107.0/24104.225.11.0/24104.225.112.0/20104.225.12.0/22104.225.12.0/24104.225.124.0/23104.225.15.0/24104.225.16.0/24104.225.17.0/24104.225.19.0/24104.225.2.0/23104.225.2.0/24104.225.20.0/24104.225.21.0/24104.225.215.0/24104.225.22.0/24104.225.24.0/23104.225.4.0/22104.225.4.0/24104.225.48.0/24104.225.49.0/24104.225.8.0/22104.225.8.0/24104.225.95.0/24104.225.96.0/24104.225.97.0/24104.225.98.0/24104.225.99.0/24104.244.19.0/24104.247.11.0/24104.247.126.0/24104.247.17.0/24104.247.29.0/24104.247.97.0/24104.251.112.0/24104.254.98.0/23104.254.99.0/24104.36.160.0/23104.37.120.0/21107.167.192.0/19107.167.192.0/24107.167.193.0/24107.167.194.0/24107.167.195.0/24107.167.196.0/24107.167.197.0/24107.167.198.0/24107.167.199.0/24107.167.200.0/24107.167.201.0/24107.167.202.0/24107.167.203.0/24107.167.204.0/24107.167.205.0/24107.167.206.0/24107.167.207.0/24107.167.208.0/24107.167.209.0/24107.167.210.0/24107.167.211.0/24107.167.212.0/24107.167.213.0/24107.167.214.0/24107.167.215.0/24107.167.216.0/24107.167.217.0/24107.167.218.0/24107.167.219.0/24107.167.220.0/24107.167.221.0/24107.167.222.0/24107.167.223.0/24108.161.80.0/20108.161.80.0/24108.161.81.0/24108.161.82.0/24108.161.83.0/24108.161.84.0/24108.161.85.0/24108.161.86.0/24108.161.87.0/24108.161.88.0/24108.161.89.0/24108.161.90.0/24108.161.91.0/24108.161.92.0/24108.161.93.0/24108.161.94.0/24108.161.95.0/24108.166.128.0/19108.166.128.0/24108.166.129.0/24108.166.130.0/24108.166.131.0/24108.166.132.0/24108.166.133.0/24108.166.134.0/24108.166.135.0/24108.166.136.0/24108.166.137.0/24108.166.138.0/24108.166.139.0/24108.166.140.0/24108.166.141.0/24108.166.142.0/24108.166.143.0/24108.166.144.0/24108.166.145.0/24108.166.146.0/24108.166.147.0/24108.166.148.0/24108.166.149.0/24108.166.150.0/24108.166.151.0/24108.166.152.0/24108.166.153.0/24108.166.154.0/24108.166.155.0/24108.166.156.0/24108.166.157.0/24108.166.158.0/24108.166.159.0/24108.167.128.0/18108.167.128.0/19108.167.128.0/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1,535 IPv6 prefixesthe first 1,000 listed
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Registries

Each registry’s copy

RADB207 membersCyrusOne and downstream customer ASNs
Maintained byMAINT-AS62
Last modified2026-04-14T21:38:21Z
MembersAS62 AS19384 AS19479 AS20013 AS30023 AS19 AS72 AS125 AS2165 AS2567 AS2712 AS2723 AS3828 AS4891 AS6977 AS7163 AS7838 AS8119 AS10511 AS10723 AS10848 AS11189 AS11262 AS11690 AS12007 AS12027 AS13782 AS14032 AS14742 AS14862 AS15003 AS15310 AS16391 AS16477 AS16525 AS16636 AS16678 AS16991 AS17038 AS17121 AS17350 AS17374 AS17377 AS17466 AS18546 AS18594 AS18649 AS18676 AS18689 AS18692 AS18996 AS19137 AS19311 AS19325 AS19606 AS19787 AS19857 AS19860 AS19961 AS20333 AS20339 AS20416 AS21945 AS21961 AS22334 AS22578 AS22717 AS22775 AS23010 AS23165 AS23426 AS23446 AS23463 AS23530 AS25765 AS25836 AS25889 AS25907 AS25938 AS25945 AS25955 AS26234 AS26512 AS26513 AS26646 AS26705 AS26716 AS26940 AS27383 AS29952 AS29954 AS30036 AS30059 AS30175 AS30246 AS30347 AS30423 AS30491 AS30673 AS31966 AS32076 AS32382 AS32402 AS32418 AS32427 AS32457 AS32462 AS32857 AS33016 AS33365 AS35934 AS36050 AS36111 AS36328 AS36607 AS36236 AS393252 AS393463 AS393520 AS393571 AS393587 AS393759 AS393793 AS393832 AS393842 AS393924 AS393961 AS393976 AS394122 AS394302 AS394481 AS395069 AS395161 AS395268 AS395273 AS395288 AS395533 AS396041 AS396285 AS396290 AS396333 AS396361 AS396497 AS396838 AS396936 AS396940 AS397325 AS397374 AS397768 AS397843 AS397941 AS398381 AS398409 AS398492 AS399110 AS399319 AS399604 AS40062 AS40666 AS40708 AS40740 AS46202 AS46204 AS46282 AS46437 AS46606 AS46608 AS46696 AS46784 AS46903 AS47523 AS49362 AS400537 AS400615 AS401237 AS401985 AS53305 AS53396 AS53542 AS53559 AS53562 AS53736 AS53741 AS54076 AS54426 AS54554 AS54635 AS54775 AS54963 AS60269 AS62467 AS62529 AS62598 AS62659 AS62680 AS62872 AS62964 AS63011 AS63044 AS63455 and 7 more
mbrs-by-refN
Used by

Sets that include AS-C1

AS-GTTCUSTAS-GTTCUST6AS-MFNXAS-NLAYER-CUSTOMERSAS-RR-BIZAS62499:AS-DECIX-DFWAS62499:AS-DECIX-DFW-V6
Tools

Check AS-C1 live

IRR API, with prefixes