ResearchRouting table, RPKI, IRR & looking glass

AS6461 Zayo Bandwidth

AS6461 (ZAYO-6461) is registered to Zayo Bandwidth in US, through ARIN. It originates 239 prefixes in the global routing table.

226
IPv4 prefixes
13
IPv6 prefixes
1,755,648
IPv4 addresses
59%
RPKI valid
Registration

Who holds AS6461

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS6461
Handle
ZAYO-6461
Organization
Zayo Bandwidth
Country
US
Registry
ARIN
ASPA
None published
WHOIS recordARIN
#
# 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.
#


ASNumber:       6461
ASName:         ZAYO-6461
ASHandle:       AS6461
RegDate:        1996-04-22
Updated:        2016-06-21
Ref:            https://rdap.arin.net/registry/autnum/6461



OrgName:        Zayo Bandwidth
OrgId:          ZAYOB
Address:        1401 Wynkoop St.
Address:        #500
City:           Denver
StateProv:      CO
PostalCode:     80202
Country:        US
RegDate:        2007-10-12
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/ZAYOB


OrgTechHandle: ZIE-ARIN
OrgTechName:   Zayo IP Engineering
OrgTechPhone:  +1-866-236-2824 
OrgTechEmail:  ipeng@zayo.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZIE-ARIN

OrgAbuseHandle: ABUSE5675-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-866-236-2824 
OrgAbuseEmail:  abuse@zayo.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5675-ARIN

OrgNOCHandle: ZIE-ARIN
OrgNOCName:   Zayo IP Engineering
OrgNOCPhone:  +1-866-236-2824 
OrgNOCEmail:  ipeng@zayo.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZIE-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.
#
Routing

What AS6461 announces

Prefixes originated by AS6461 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
226
IPv6 prefixes
13
IPv4 addresses
1,755,648 (6,858 /24s)
RPKI valid
142 59%
RPKI invalid
2
RPKI not found
95
ROAs naming AS6461
274
With an IRR route object
55 23%
Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (226)
23.139.176.0/2431.99.0.0/1845.33.128.0/2050.115.24.0/2463.208.55.0/2463.249.63.0/2464.56.211.0/2464.124.0.0/1764.124.128.0/1964.124.160.0/2064.124.176.0/2164.124.184.0/2264.124.188.0/2364.124.190.0/2364.124.192.0/1864.125.0.0/1664.125.74.0/2466.46.0.0/1666.62.132.0/2466.62.161.0/2466.62.182.0/2366.62.230.0/2466.62.238.0/2466.62.239.0/2466.62.240.0/2266.62.244.0/2366.213.128.0/1967.136.93.0/2467.208.224.0/1967.213.160.0/2067.230.192.0/1968.170.192.0/2069.147.0.0/2069.147.2.0/2469.147.4.0/2469.147.44.0/2269.147.52.0/2269.147.55.0/2469.166.105.0/2469.195.0.0/2070.98.210.0/2471.19.160.0/1972.5.65.0/2472.10.64.0/1972.20.192.0/1874.80.190.0/2474.114.161.0/2474.114.162.0/2474.114.163.0/2474.114.164.0/2274.212.179.0/2474.213.234.0/2474.213.235.0/2474.216.0.0/1676.78.123.0/2479.141.32.0/2079.183.247.0/2482.98.192.0/2182.98.232.0/2182.98.240.0/2091.208.131.0/2494.31.0.0/1895.134.53.0/2495.134.104.0/2495.134.105.0/2495.134.106.0/2495.134.107.0/2495.134.108.0/2495.134.109.0/2495.134.110.0/2495.134.111.0/2495.164.96.0/2097.107.64.0/2497.107.65.0/24103.139.130.0/23104.36.8.0/21104.140.204.0/24104.145.0.0/20104.224.2.0/24104.251.96.0/20107.178.32.0/20128.177.0.0/16129.192.170.0/24129.192.171.0/24129.192.189.0/24141.193.226.0/24142.194.0.0/16144.83.0.0/16149.64.226.0/24150.169.12.0/24159.18.0.0/16159.246.52.0/24162.223.4.0/22162.223.112.0/22162.245.96.0/22162.249.88.0/21162.251.150.0/24162.253.136.0/21164.90.20.0/24167.217.0.0/16168.102.128.0/20168.254.5.0/24170.81.198.0/24170.130.36.0/23170.130.60.0/23172.110.64.0/20173.44.196.0/23173.46.64.0/20173.213.70.0/23173.241.208.0/20176.46.143.0/24176.46.146.0/24184.94.0.0/17185.75.80.0/24185.94.77.0/24185.94.79.0/24192.40.232.0/21192.64.252.0/24192.75.172.0/24192.124.45.0/24
Show 106 more
192.132.44.0/24192.197.156.0/24192.255.94.0/24193.28.62.0/23193.28.104.0/23193.34.72.0/23193.34.74.0/23193.160.88.0/22198.60.184.0/22198.90.96.0/22198.100.128.0/21199.5.171.0/24199.16.106.0/24199.43.120.0/24199.85.120.0/22199.87.52.0/22199.96.32.0/22199.96.40.0/22199.119.160.0/22199.164.64.0/18199.164.68.0/24199.199.36.0/24199.212.160.0/19200.123.205.0/24200.123.207.0/24204.9.72.0/21204.14.211.0/24204.19.20.0/23204.128.64.0/19204.128.96.0/19204.128.96.0/24205.159.43.0/24206.165.102.0/24206.191.64.0/18206.222.64.0/19207.11.241.0/24207.126.96.0/19207.181.64.0/18207.190.143.0/24207.230.224.0/19207.235.128.0/17207.235.133.0/24207.235.136.0/24207.235.146.0/24207.235.148.0/24207.235.149.0/24207.235.150.0/24207.235.151.0/24207.235.152.0/24207.235.153.0/24207.235.154.0/24207.235.155.0/24207.235.157.0/24207.235.158.0/24207.235.160.0/24207.235.161.0/24207.235.255.0/24207.245.0.0/18207.245.192.0/18208.39.192.0/18208.67.56.0/22208.67.192.0/21208.70.197.0/24208.83.248.0/21208.91.200.0/22208.184.0.0/15208.187.29.0/24209.66.64.0/18209.82.0.0/17209.82.160.0/19209.90.52.0/24209.90.58.0/24209.105.164.0/24209.112.0.0/18209.133.0.0/17209.146.128.0/17209.152.0.0/20209.152.16.0/20209.153.192.0/18209.183.176.0/20209.221.32.0/19209.249.0.0/16212.32.48.0/24213.152.224.0/19213.161.64.0/19216.13.0.0/16216.23.128.0/19216.119.0.0/18216.123.0.0/17216.123.128.0/18216.129.0.0/18216.129.64.0/19216.157.192.0/19216.191.0.0/16216.200.0.0/17216.200.128.0/19216.200.160.0/20216.200.176.0/21216.200.184.0/22216.200.188.0/22216.200.192.0/18216.222.0.0/17216.227.5.0/24216.227.120.0/24216.235.128.0/19216.248.208.0/20
IPv6 (13)
2001:438::/322001:4c8::/322001:4c8:1092::/482001:4c8:110a::/482001:df0:7c80::/482001:1b70:b3::/482602:807:400c::/482602:fdbe::/362604:b040:b::/482604:e500::/322607:c200:1106::/482800:870:1002::/482a00:16f8::/32

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS6461 is reached through

The AS just before AS6461 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS6939 HURRICANE 60AS3356 LEVEL3 59AS174 COGENT-174 59AS3257 GTT-BACKBONE 1
ASPA

Provider authorization

AS6461 publishes no ASPA of its own. 75 ASes name it as a provider in theirs. Check a path.

The 75 ASes that name AS6461 as a provider
AS80 GE-CRDAS835 GOCODEIT-EDGEAS897 TURTLE-ROCK-STUDIOSAS1436 HACKENSACK-MERIDIAN-HEALTHAS2852 CESNET2AS6424 EDGOOAS8899 DEUTSCHE-GLASFASERAS13464 CPLP-ASNAS13576 SDNW-13576AS13781 ENERGYNETAS13819 FWIN-NETAS14103 ACDNET-ASN1AS14729 THRIVE-SE1AS14773 LANLEB-IU13AS14901 TAOSNET-NEWMEXAS15191 WIN-NETAS19651 TTL-LTDAS20804 ASN-TELENERGOAS22062 GEOSTARAS23028 TEAM-CYMRUAS23376 EN-23376AS25192 CZNIC-ASAS29208 QUANTCOM-ASAS30437 GE-MS003AS32277 TBAYTELAS32560 BITXBITAS33362 WIKTELAS34428 EIGHTROUTEAS34953 RELAIXAS36032 WBD-AS36032AS36231 Tempest-Hosting AGX Management ConsultancyAS36506 WA-ASNAS36858 NMSTNAS42739 FONE-ASNAS43207 QUICKLINEAS44934 ARACHSYSAS46893 TRANSWORKSAS47160 MOJIAS48070 DSMAS49935 SmartEyeAS51826 EVROCAS53529 JCC-ASNAS56595 FLUENCYAS57099 QUICKLINEAS60132 ZOREOLE-ASAS62000 AS62000AS63296 AWBROADBANDAS64289 MACARNEAS200070 CZNIC-AS2AS200449 QRATOR-CZAS202142 PACKETHARBORAS205350 CLTGROUP-ASAS207120 QUICKLINEAS208267 SERENNOAS210258 WildanetAS211757 PANASCAISAS213641 AS213641AS393769 LEANDER-ISD-AS1AS394737 ANTS-TECHNOLOGYAS396420 VALLEYFIBERAS398150 OSVAS398783 SLICEAS399116 FIBRETELAS399541 WRC-ASAS400381 CENTRICTX-ASNAS400587 RYAMERAS401723 PRIMECORPAS401877 WBC-ASN-03AS401878 WBC-ASN-04AS401976 NEXTHOP-ASAS402000 ATWAB-INCAS402063 XANTIUM-AS-01AS402347 CAV-MNG-AS-01AS402553 CAV-PROD-AS-01AS402640 USAP
IRR

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Route objects with origin AS6461: ARIN 73 · RIPE 72 · RADB 43 · APNIC 4 · LACNIC 4 · AFRINIC 2

as-sets that list AS6461 (161)first 40 shown
AS-14230-UPSTREAMAS-15003:AS-TRANSITAS-36193AS-38082-AMSIXAS-43323_LND-THN-PEERSAS-AISDPROVIDERSAS-AS33274-TRANSIT-PEERSAS-ATRATO:AS-PEERSAS-BNIXAS-BSVE:AS-AMSIX-PEERSAS-BSVE:AS-LINX-PEERS-1AS-BSVE:AS-LINX-PEERS-2AS-BSVE:AS-LONAP-PEERS-1AS-BSVE:AS-LONAP-PEERS-2AS-CAMBRIUM-AMSIX-RS-DENYAS-CARRIERONEPEERSAS-CENTRICAS-CFCAS-CLARANETFR-PEERINGSAS-CONGOTELECOMAS-CTBC-CUSTOMERS64AS-DIGICOMMPSAS-ECIX-BERAS-ECIX-DUSAS-ECIX-FRAAS-ECIX-HAMAS-ECIX-MUCAS-FASTT-ALLAS-FINECOM-PEERS-AMSIXAS-FINECOM-PEERS-DECIXAS-FRANCEIX-MRS-LISTAS-FRANCEIX-PAR-LISTAS-H5-CHT1-TRANSITAS-H5-HDN1-TRANSITAS-H5-MSP1-TRANSITAS-H5-SAT1-TRANSITAS-H5-SVA1-TRANSITAS-H5DATA-AS-SETATL01AS-H5DATA-AS-SETCLE01AS-H5DATA-AS-SETDEN01
Tools

Check AS6461 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup