AS46887 Zayo (fka. Crown Castle) 🇺🇸 US

Zayo Bandwidth. Announcing 1,051 prefixes, seen at the RIS collectors.

IPv4 prefixes

798

1,346,304 (5,259 × /24)

IPv6 prefixes

253

4.5 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

964

transit customers observed

Customer cone

1,408

ASes reachable through it

Registry and operator data

AS number: AS46887
Name: Zayo (fka. Crown Castle)
Organisation: Crown Castle
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2009-04-13
Network type: NSP
Scope: North America
Peering policy: Restrictive
IRR as-set: AS-CCF
Website: https://www.crowncastle.com/
PeeringDB: net/11564
Exchanges: 7
Facilities: 7

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

5 valid (0.5%) 0 invalid (0.0%) 1,046 no ROA (99.5%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS1299 Arelion (fka. Telia Carrier)	🇸🇪 SE	68,784	132	1	CAIDA
AS6461 Zayo Bandwidth	🇺🇸 US	50,396	214	133,865	CAIDA

Peers

Adjacencies that look settlement-free rather than transit

No peers observed at the collectors.

Downstreams

Networks this one appears to provide transit to

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS36352 HostPapa	🇺🇸 US	232	3,223	15,101	CAIDA
AS33132 Zayo Bandwidth	🇺🇸 US	93	49	8,359	CAIDA
AS14230 ARK Data Centers LLC	🇺🇸 US	24	66	61	CAIDA
AS397523 NJSDA	🇺🇸 US	20	0	40	CAIDA
AS398427 Markley Network Services, LLC	🇺🇸 US	16	9	329	CAIDA
AS16504 Granite Telecommunications LLC	🇺🇸 US	15	201	8	CAIDA
AS7828 Northland Communications	🇺🇸 US	9	111	7	CAIDA
AS3360 DXC US Latin America Corporation	🇺🇸 US	8	346	710	CAIDA
AS11598 Cloudsmart	🇺🇸 US	6	6	265	CAIDA
AS6372 DCANet	🇺🇸 US	6	7	189	CAIDA
AS395383 Cologuard	🇺🇸 US	6	25	44	CAIDA
AS395748 NetSpeed LLC	🇺🇸 US	5	52	754	CAIDA
AS11042 NETWORK TRANSIT HOLDINGS LLC	🇺🇸 US	5	96	541	CAIDA
AS32415 C3	🇺🇸 US	5	54	176	CAIDA
AS40187 Gigstreem	🇺🇸 US	5	8	142	CAIDA
AS36253 Delaware County Intermediate Unit	🇺🇸 US	5	1	35	CAIDA
AS11817 Stafford Associates Computer Specialists, Inc.	🇺🇸 US	4	12	194	CAIDA
AS10583 Connecticut Hospital Assoc.	🇺🇸 US	4	12	8	CAIDA
AS3783 Allegheny Intermediate Unit	🇺🇸 US	3	7	191	CAIDA
AS26854 New York State	🇺🇸 US	3	20	164	CAIDA
AS14669 Convergeone Unified Technology Solutions, Inc.	🇺🇸 US	3	8	110	CAIDA
AS32278 Getwireless.net	🇺🇸 US	3	17	73	CAIDA
AS5033 Converge Technology Solutions US, LLC	🇺🇸 US	3	13	46	CAIDA
AS16491 ViaSat, Inc.	🇺🇸 US	3	33	40	CAIDA
AS23410 Nassau County BOCES	🇺🇸 US	2	312	7,184	CAIDA
AS27506 Zayo Bandwidth	🇺🇸 US	2	17	720	CAIDA
AS6254 EG&G, Inc.	🇺🇸 US	2	8	430	CAIDA
AS395652 County of Bergen	🇺🇸 US	2	6	392	CAIDA
AS6620 AMA Communications, LLC	🇺🇸 US	2	101	300	CAIDA
AS17088 Currenex, Inc.	🇺🇸 US	2	37	201	CAIDA
AS19693 Centrilogic, Inc.	🇺🇸 US	2	25	193	CAIDA
AS394548 Gigstreem	🇺🇸 US	2	6	160	CAIDA
AS17035 NBCUniversal	🇺🇸 US	2	38	117	CAIDA
AS11402 Charlotte Colocation Center, LLc	🇺🇸 US	2	30	113	CAIDA
AS397720 Novus Insight	🇺🇸 US	2	4	100	CAIDA
AS26881 DaSTOR LLC	🇺🇸 US	2	15	99	CAIDA
AS18839 Fisher Scientific	🇺🇸 US	2	0	96	CAIDA
AS12024 Advanced Corporate Network	🇺🇸 US	2	1	86	CAIDA
AS19272 Rochester Colo LLC	🇺🇸 US	2	1	81	CAIDA
AS394898 H5 Data Centers	🇺🇸 US	2	7	72	CAIDA
AS399220 Finger Lakes Communications Group, Inc	🇺🇸 US	2	19	66	inferred
AS10326 Worcester Polytechnic Institute	🇺🇸 US	2	2	54	CAIDA
AS401233 Alliance Broadband	🇺🇸 US	2	2	51	CAIDA
AS14747 Lee County Clerk of Courts	🇺🇸 US	2	1	47	CAIDA
AS30001 Techevolution	🇺🇸 US	2	1	44	CAIDA
AS40831 Mass General Brigham Incorporated	🇺🇸 US	2	5	40	CAIDA
AS397536 Cloud Connectiv Incorporated	🇺🇸 US	2	1	39	inferred
AS29457 Options Technology Ltd	🇬🇧 GB	2	55	37	CAIDA
AS21965 Highmark Inc	🇺🇸 US	2	22	26	CAIDA
AS26225 Think On, Inc.	🇨🇦 CA	2	11	21	CAIDA
AS22694 Versant Media Group, Inc.	🇺🇸 US	2	2	14	CAIDA
AS20135 Millennium Telcom LLC	🇺🇸 US	2	44	8	CAIDA
AS401025 Excel Orthopaedic Specialists	🇺🇸 US	2	0	8	CAIDA
AS393731 Fusion Voice and Data Corp.	🇺🇸 US	2	15	7	CAIDA
AS35891 Norwood Light Broadband	🇺🇸 US	2	5	7	CAIDA
AS399598 Local Network Solutions, Inc.	🇺🇸 US	2	1	2	CAIDA
AS32531 Fordham University	🇺🇸 US	0	89	1,516	CAIDA
AS397115 Electric Boat Corporation	🇺🇸 US	0	48	1,279	CAIDA
AS21704 New York City Board of Education	🇺🇸 US	0	24	959	CAIDA
AS4906 Frontline Communications	🇺🇸 US	0	18	644	CAIDA
AS26793 ICS Advanced Technologies	🇺🇸 US	0	21	601	CAIDA
AS27609 USC-University Hospital	🇺🇸 US	0	45	540	CAIDA
AS54253 Oracle Corporation	🇺🇸 US	0	367	537	CAIDA
AS22644 Thomas Jefferson University Hospitals, Inc.	🇺🇸 US	0	5	533	CAIDA
AS11790 Random House, Inc.	🇺🇸 US	0	18	513	CAIDA
AS11516 Eastern Suffolk BOCES	🇺🇸 US	0	56	479	CAIDA
AS31942 HyperFiber	🇺🇸 US	0	15	443	CAIDA
AS33545 Bard College	🇺🇸 US	0	9	353	CAIDA
AS22753 Red Hat, Inc.	🇺🇸 US	0	9	347	CAIDA
AS21 The RAND Corporation	🇺🇸 US	0	10	331	CAIDA
AS398875 The City of New York	🇺🇸 US	0	12	311	CAIDA
AS40021 Contabo (Nubes, LLC)	🇺🇸 US	0	92	301	CAIDA
AS2134 Santander Global Technology and Operations, S.L.	🇪🇸 ES	0	132	294	CAIDA
AS53352 Henry Ford Health System	🇺🇸 US	0	17	278	CAIDA
AS398059 State University New York Purchase College	🇺🇸 US	0	7	277	CAIDA
AS397472 US NEW ERA INTERNET CORP	🇺🇸 US	0	2	270	CAIDA
AS398816 Flume	🇺🇸 US	0	17	261	CAIDA
AS3576 Hodgson Russ LLP	🇺🇸 US	0	7	261	CAIDA
AS19428 Phillips 66 Company	🇺🇸 US	0	17	256	CAIDA
AS36812 Master Lock Company LLC	🇺🇸 US	0	6	240	CAIDA
AS23484 Pace University	🇺🇸 US	0	12	240	CAIDA
AS394700 The School District of Palm Beach County	🇺🇸 US	0	16	239	CAIDA
AS7227 KPMG LLP	🇺🇸 US	0	43	234	CAIDA
AS36136 ALARMNET	🇺🇸 US	0	8	233	CAIDA
AS18522 Yum! Brands, Inc.	🇺🇸 US	0	18	226	CAIDA
AS11188 LOS ANGELES COUNTY - INTERNAL SERVICESDIVISION	🇺🇸 US	0	49	219	CAIDA
AS17144 Microsoft Corporation	🇺🇸 US	0	4	219	CAIDA
AS27185 Danbury Hospital - ITG	🇺🇸 US	0	10	215	CAIDA
AS20442 Yale-New Haven Health Services Corporation	🇺🇸 US	0	30	210	CAIDA
AS25611 North Shore Long Island Jewish Health System	🇺🇸 US	0	10	210	CAIDA
AS397986 Pennsylvania Convention Center Authority	🇺🇸 US	0	7	207	CAIDA
AS2641 The Scripps Research Institute	🇺🇸 US	0	6	205	CAIDA
AS19236 Steelcase, Inc.	🇺🇸 US	0	11	202	CAIDA
AS23022 DELAWARE STATE UNIVERSITY	🇺🇸 US	0	5	200	CAIDA
AS19963 Dutchess County BOCES	🇺🇸 US	0	5	200	CAIDA
AS396151 Steward Health Care System LLC	🇺🇸 US	0	18	200	CAIDA
AS46191 Globalinx	🇺🇸 US	0	5	200	CAIDA
AS10955 WILLIAM PATERSON UNIVERSITY	🇺🇸 US	0	5	200	CAIDA
AS395911 Maryland Live! Casino	🇺🇸 US	0	5	200	CAIDA
AS400039 Wolverine Trading, LLC	🇺🇸 US	0	39	200	CAIDA
AS22006 PRONSS	🇺🇸 US	0	39	199	CAIDA
AS22883 CondeNast Publications	🇺🇸 US	0	8	198	CAIDA
AS400097 National Wi-Fi	🇺🇸 US	0	5	198	inferred
AS46946 Thomas Jefferson University	🇺🇸 US	0	5	195	CAIDA
AS11928 Hachette Book Group, Inc.	🇺🇸 US	0	5	195	CAIDA
AS63254 Department of Information Technology	🇺🇸 US	0	5	191	CAIDA
AS393298 Fishers Island Telephone Corp.	🇺🇸 US	0	4	185	CAIDA
AS398580 Queens University of Charlotte	🇺🇸 US	0	8	183	CAIDA
AS46537 Elm Datacenter LLC	🇺🇸 US	0	5	182	CAIDA
AS54576 Hoag Memorial Hospital Presbyterian	🇺🇸 US	0	11	180	CAIDA
AS26057 Mediaocean LLC	🇺🇸 US	0	16	179	CAIDA
AS63427 Computer Design & Integration LLC	🇺🇸 US	0	10	174	CAIDA
AS54036 Clean Harbors Environmental Services, Inc.	🇺🇸 US	0	21	168	CAIDA
AS27353 Indiana University Health Inc.	🇺🇸 US	0	11	162	CAIDA
AS12073 Contemporary Computer Services Inc.	🇺🇸 US	0	4	160	CAIDA
AS400776 Sarasota County Schools	🇺🇸 US	0	4	160	CAIDA
AS19899 Miami Dade College	🇺🇸 US	0	6	160	CAIDA
AS1747 IBM	🇺🇸 US	0	4	160	CAIDA
AS53585 The State Insurance Fund	🇺🇸 US	0	7	160	CAIDA
AS25903 Grid Communications	🇺🇸 US	0	4	160	CAIDA
AS30228 Teva Pharmaceuticals USA, INC	🇺🇸 US	0	4	160	CAIDA
AS40722 California Institute of the Arts	🇺🇸 US	0	4	160	CAIDA
AS46913	-	0	4	160	CAIDA
AS53504 PulseNET	🇺🇸 US	0	4	160	CAIDA
AS36861 RWJBarnabas Health, Inc.	🇺🇸 US	0	8	154	CAIDA
AS19790 Aspire Broadband, LLC	🇺🇸 US	0	4	153	CAIDA
AS23277 SMART CITY NETWORKS, LIMITED PARTNERSHIP	🇺🇸 US	0	3	153	CAIDA
AS21895 New York Law School	🇺🇸 US	0	4	152	CAIDA
AS22804 Ideal Integrations, LLC	🇺🇸 US	0	8	152	CAIDA
AS30012 Universal Music Group, INC.	🇺🇸 US	0	54	150	CAIDA
AS19247 Northwestern Memorial Hospital	🇺🇸 US	0	4	149	CAIDA
AS30104 GTel Networks inc.	🇺🇸 US	0	4	148	CAIDA
AS33177 Kaleida Health	🇺🇸 US	0	7	147	CAIDA
AS20306 Adelphi University	🇺🇸 US	0	4	144	CAIDA
AS7328 The Children's Hospital of Philadelphia	🇺🇸 US	0	4	143	CAIDA
AS31822 City University of New York	🇺🇸 US	0	12	140	CAIDA
AS62644 NBC Sports Network	🇺🇸 US	0	4	137	CAIDA
AS401164 Elizabeth Board of Education	🇺🇸 US	0	2	136	CAIDA
AS19011 Iteris, Inc.	🇺🇸 US	0	8	136	CAIDA
AS397449 Haywire	🇺🇸 US	0	4	134	CAIDA
AS26438 Monroe Community College	🇺🇸 US	0	13	134	CAIDA
AS6646 Aetna, Inc.	🇺🇸 US	0	20	133	CAIDA
AS54799 OTC Markets Group Inc	🇺🇸 US	0	5	133	CAIDA
AS32739 Christiana Care Health Services, Inc.	🇺🇸 US	0	6	126	CAIDA
AS399054 K.A.S. Cable T.V., Inc.	🇺🇸 US	0	4	124	CAIDA
AS22418 Cologuard	🇺🇸 US	0	5	123	CAIDA
AS397121 Kaman Corporation	🇺🇸 US	0	4	121	CAIDA
AS23278 SMART CITY NETWORKS, LIMITED PARTNERSHIP	🇺🇸 US	0	3	120	CAIDA
AS11386 HEALTH AND HOSPITAL CORPORATION OF MARION COUNTY	🇺🇸 US	0	3	120	CAIDA
AS21975 LOOMIS SAYLES & CO., LP	🇺🇸 US	0	4	120	CAIDA
AS40725 Universal Connectivity, Inc.	🇺🇸 US	0	4	120	CAIDA
AS23539 Tel-Star Communications Of Florida, Inc.	🇺🇸 US	0	3	120	CAIDA
AS25800	-	0	3	120	CAIDA
AS15205 Nassau County Police Department	🇺🇸 US	0	4	120	CAIDA
AS16657 Zayo Bandwidth	🇺🇸 US	0	3	120	CAIDA
AS394802 BRISTOL HOSPITAL INCORPORATED	🇺🇸 US	0	4	120	CAIDA
AS53260 Clark University	🇺🇸 US	0	9	120	CAIDA
AS22693 Albany Schoharie Schenectady BOCES	🇺🇸 US	0	3	120	CAIDA
AS54119 WhiteSky Communications, LLC.	🇺🇸 US	0	55	120	CAIDA
AS26252 Legrand North America, Inc.	🇺🇸 US	0	3	120	CAIDA
AS401319 TensorWave Inc.	🇺🇸 US	0	10	120	CAIDA
AS47072 Saint Francis Hospital and Medical Center	🇺🇸 US	0	3	120	CAIDA
AS15017 Malverne Union Free School District	🇺🇸 US	0	3	120	CAIDA
AS395519 Connecticut Children's Medical Center	🇺🇸 US	0	4	120	CAIDA
AS10499 Rochester Gas and Electric Corporation	🇺🇸 US	0	6	120	CAIDA
AS20404 NRG Energy, Inc.	🇺🇸 US	0	7	120	CAIDA
AS19576 Eastern University	🇺🇸 US	0	6	119	CAIDA
AS5080 Aramco	🇺🇸 US	0	26	119	CAIDA
AS21504 The Bessemer Group, Inc.	🇺🇸 US	0	20	118	CAIDA
AS13990 County of Orange	🇺🇸 US	0	31	118	CAIDA
AS32457 City of Houston	🇺🇸 US	0	14	117	CAIDA
AS399568 Off-Grid Communications LLC	🇺🇸 US	0	2	113	CAIDA
AS54488 Hotwire Communications	🇺🇸 US	0	7	113	CAIDA
AS46269 UKG Kronos Systems, LLC	🇺🇸 US	0	74	113	CAIDA
AS54319 Arxsystems.Io LLC	🇺🇸 US	0	2	113	CAIDA
AS30346 Sumitomo Mitsui Banking Corporation	🇺🇸 US	0	5	112	CAIDA
AS54853 Impact Internet	🇺🇸 US	0	2	112	CAIDA
AS3719 State of Connecticut Judicial Branch	🇺🇸 US	0	15	110	CAIDA
AS36319 NorthShore University HealthSystem	🇺🇸 US	0	11	109	CAIDA
AS6124 Marist University	🇺🇸 US	0	4	109	CAIDA
AS30438 Resolve I.T.	🇺🇸 US	0	2	109	CAIDA
AS167 Wesleyan University	🇺🇸 US	0	3	108	CAIDA
AS32906 FACTORY MUTUAL INSURANCE COMPANY	🇺🇸 US	0	12	108	CAIDA
AS33358 AE CORPORATE SERVICES CO	🇺🇸 US	0	3	107	CAIDA
AS12099 OAKWOOD HEALTHCARE INC	🇺🇸 US	0	7	102	CAIDA
AS11123 Ultimate Internet Access, Inc	🇺🇸 US	0	59	101	CAIDA
AS11047 Hartford Hospital	🇺🇸 US	0	12	100	CAIDA
AS399957 Queens County District Attorney's Office	🇺🇸 US	0	3	99	CAIDA
AS22458 CONVERGEONE HOLDINGS, INC.	🇺🇸 US	0	82	99	CAIDA
AS21687 Zayo Bandwidth	🇺🇸 US	0	0	97	inferred
AS7317 The First Church of Christ, Scientist	🇺🇸 US	0	4	96	CAIDA
AS393499 Otava, LLC	🇺🇸 US	0	4	95	CAIDA
AS32482 Bandwidth Inc.	🇺🇸 US	0	4	95	CAIDA
AS17103 Jensen Research Corporation	🇺🇸 US	0	3	94	CAIDA
AS26084 PCI	🇺🇸 US	0	4	92	CAIDA
AS10558 Biola University, Inc.	🇺🇸 US	0	6	92	CAIDA
AS32064 American University	🇺🇸 US	0	4	91	CAIDA
AS25807 Arlington County Government	🇺🇸 US	0	7	89	CAIDA
AS36373 Community Hospitals, Indianapolis	🇺🇸 US	0	11	89	CAIDA
AS32005 CHURCH PENSION GROUP SERVICES CORPORATION	🇺🇸 US	0	4	88	CAIDA
AS29825 Illinois Institute of Technology	🇺🇸 US	0	7	88	CAIDA
AS46504 Bonds.com, LLC	🇺🇸 US	0	3	87	CAIDA
AS26182 Excellus Health Plan, Inc.	🇺🇸 US	0	3	87	CAIDA
AS40947 Franklin W. Olin College Of Engineering	🇺🇸 US	0	5	87	CAIDA
AS54323 Maimonides Medical Center	🇺🇸 US	0	4	84	CAIDA
AS26043 National Education Association	🇺🇸 US	0	3	84	CAIDA
AS33378 EASTERN BANK	🇺🇸 US	0	5	82	CAIDA
AS13602 I-Evolve Technology Services	🇺🇸 US	0	10	81	CAIDA
AS21795 Mount Saint Mary College	🇺🇸 US	0	2	80	CAIDA
AS10497 IBRD	🇺🇸 US	0	13	80	CAIDA
AS20188 Gwynedd Mercy College	🇺🇸 US	0	2	80	CAIDA
AS395868 Fort Bend Independent School District	🇺🇸 US	0	3	80	CAIDA
AS14241 Oakland Schools	🇺🇸 US	0	10	80	inferred
AS18482 City of Raleigh	🇺🇸 US	0	3	80	CAIDA
AS16758 Ricoh USA, Inc.	🇺🇸 US	0	32	80	CAIDA
AS33714 Hospital Billing and Collection Service, LTD	🇺🇸 US	0	2	80	CAIDA
AS11490	-	0	2	80	CAIDA
AS20258 Analog Devices, Inc.	🇺🇸 US	0	43	80	CAIDA
AS23442 Deluxe Laboratories, Inc.	🇺🇸 US	0	11	80	CAIDA
AS27600 Virginia Hospital Center	🇺🇸 US	0	2	80	CAIDA
AS26976 Kate Spade Holdings LLC	🇺🇸 US	0	3	80	CAIDA
AS1757 RELX inc.	🇺🇸 US	0	16	80	CAIDA
AS26732 Wagner College	🇺🇸 US	0	2	80	CAIDA
AS397417 Suffolk County Water Authority	🇺🇸 US	0	2	80	CAIDA
AS13426 Juno Online Services, Inc.	🇺🇸 US	0	3	80	CAIDA
AS399009 FANUC America Corporation	🇺🇸 US	0	2	80	CAIDA
AS54282 Johnson & Johnson	🇺🇸 US	0	3	80	CAIDA
AS40790 BCG Attorney Search	🇺🇸 US	0	2	80	CAIDA
AS393813 Quantum Health Inc	🇺🇸 US	0	2	80	CAIDA
AS401156 Metropolitan Commercial Bank	🇺🇸 US	0	2	80	CAIDA
AS30474 Imprivata Inc	🇺🇸 US	0	2	80	CAIDA
AS12205 Sachem Central School District	🇺🇸 US	0	2	80	CAIDA
AS394129 United Site Services	🇺🇸 US	0	2	80	CAIDA
AS16639 Iron Bow Technologies, LLC	🇺🇸 US	0	3	80	CAIDA
AS36565 County of Montgomery	🇺🇸 US	0	2	80	CAIDA
AS7170 Manhattan West, LLC	🇺🇸 US	0	3	80	CAIDA
AS400651 Apogee Telecom Inc.	🇺🇸 US	0	2	79	CAIDA
AS395060 Macmillan Publishers Inc	🇺🇸 US	0	3	79	CAIDA
AS54664 TBC Corporation	🇺🇸 US	0	3	79	CAIDA
AS401306 Ingersoll Rand Inc.	🇺🇸 US	0	2	79	CAIDA
AS4880 Lifeline Systems, Company	🇺🇸 US	0	6	79	CAIDA
AS21882 SMART CITY NETWORKS, LIMITED PARTNERSHIP	🇺🇸 US	0	2	79	CAIDA
AS398388 Elauwit Connection Inc.	🇺🇸 US	0	3	79	CAIDA
AS2650 Executive Office Of The President	🇺🇸 US	0	5	79	CAIDA
AS395095 Orange Regional Medical Center	🇺🇸 US	0	4	78	CAIDA
AS12187 Metropolitan Transportation Authority	🇺🇸 US	0	14	78	CAIDA
AS395523 IGS Energy	🇺🇸 US	0	2	78	CAIDA
AS54532 AAA Northeast	🇺🇸 US	0	2	78	CAIDA
AS12245 Peninsula Regional Medical Center	🇺🇸 US	0	3	78	CAIDA
AS55088 RWA Wealth Partners, LLC	🇺🇸 US	0	3	78	CAIDA

Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.