206208 looking glass

AS33491 Comcast Cable Communications, LLC 🇺🇸 US

Announcing 288 prefixes, seen at the RIS collectors.

IPv4 prefixes
86
48,128 (188 × /24)
IPv6 prefixes
202
202 × /48
Upstreams
1
transit providers observed
Peers
1
settlement-free adjacencies
Downstreams
252
transit customers observed
Customer cone
277
ASes reachable through it

Registry and operator data

AS number
AS33491
Name
Comcast Cable Communications, LLC
Organisation
Comcast - Chicago
Country
🇺🇸 US
RIR
ARIN
Allocated
2004-12-30
Network type
Cable/DSL/ISP
Scope
Regional
Peering policy
Restrictive
PeeringDB
net/10078
Facilities
1

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

268 valid (93.1%) 0 invalid (0.0%) 20 no ROA (6.9%)

Upstreams

Networks seen providing transit to this one

Network Country Cone IPv4 prefixes Paths Source
AS3356 Lumen (Level 3) 🇺🇸 US 70,987 2,083 2,974 CAIDA

Peers

Adjacencies that look settlement-free rather than transit

Network Country Cone IPv4 prefixes Paths Source
AS7922 Comcast Cable Communications, LLC 🇺🇸 US 25,908 426 18,139 CAIDA

Downstreams

Networks this one appears to provide transit to

Network Country Cone IPv4 prefixes Paths Source
AS19855 Masergy Communications, Inc. 🇺🇸 US 18 98 129 CAIDA
AS11739 Digital Fortress, Inc. 🇺🇸 US 7 3 1 CAIDA
AS36443 Aunalytics, Inc 🇺🇸 US 5 20 28 CAIDA
AS63474 Sirius Computer Solutions, Inc. 🇺🇸 US 3 20 11 CAIDA
AS14858 Hanson Information Systems, Inc. / Family Net 🇺🇸 US 2 37 407 CAIDA
AS17035 NBCUniversal 🇺🇸 US 2 38 33 CAIDA
AS22663 Prominic.NET, Inc. 🇺🇸 US 2 15 27 CAIDA
AS36373 Community Hospitals, Indianapolis 🇺🇸 US 0 11 372 CAIDA
AS13950 DLS Internet Services, Inc 🇺🇸 US 0 7 309 CAIDA
AS14414 Telit IoT Platforms, LLC 🇺🇸 US 0 7 285 CAIDA
AS36319 NorthShore University HealthSystem 🇺🇸 US 0 11 224 CAIDA
AS27482 American Eagle Computer Products, Inc. 🇺🇸 US 0 33 222 CAIDA
AS33248 City of Evanston, Illinois 🇺🇸 US 0 5 213 CAIDA
AS26912 Northwest Community Hospital 🇺🇸 US 0 6 213 CAIDA
AS40038 Moraine Valley Community College 🇺🇸 US 0 8 196 CAIDA
AS19265 Memorial Medical Center 🇺🇸 US 0 15 184 CAIDA
AS32143 The Village of Niles 🇺🇸 US 0 4 172 CAIDA
AS396021 Comcast Cable Communications, LLC 🇺🇸 US 0 4 162 CAIDA
AS26840 Advanced Business Group, LLC 🇺🇸 US 0 4 145 CAIDA
AS4917 AMDOCS Inc. 🇺🇸 US 0 21 137 CAIDA
AS40628 Oklahoma Office of Management & Enterprise Services 🇺🇸 US 0 13 130 CAIDA
AS29817 LAKE CITY BANK 🇺🇸 US 0 3 129 CAIDA
AS395490 County of Lake 🇺🇸 US 0 3 129 CAIDA
AS54583 American College of Surgeons 🇺🇸 US 0 3 124 CAIDA
AS55037 Busey Bank 🇺🇸 US 0 17 121 CAIDA
AS7968 Loyola University Chicago 🇺🇸 US 0 8 117 CAIDA
AS396995 Morris Hospital 🇺🇸 US 0 3 113 CAIDA
AS54971 Brown Technologies, LLC 🇺🇸 US 0 3 92 CAIDA
AS10425 - 0 3 92 CAIDA
AS54056 Packaging Corporation of America 🇺🇸 US 0 5 90 CAIDA
AS400236 East Allen County Schools 🇺🇸 US 0 2 86 CAIDA
AS32528 ROSS PRODUCTS DIVISION 🇺🇸 US 0 32 86 CAIDA
AS40668 Fenwal, Inc. 🇺🇸 US 0 2 86 CAIDA
AS21798 International Truck and Engine Corp 🇺🇸 US 0 3 86 CAIDA
AS398421 Southwest Allen County Schools 🇺🇸 US 0 2 84 CAIDA
AS33331 Valid USA 🇺🇸 US 0 2 84 CAIDA
AS36040 Google (Global Cache) 🇺🇸 US 0 86 84 CAIDA
AS20315 McHenry County 🇺🇸 US 0 3 84 CAIDA
AS16593 First Merchants Corporation 🇺🇸 US 0 2 83 CAIDA
AS27562 Presence Health Network 🇺🇸 US 0 4 83 CAIDA
AS12250 EDWARD HEALTH SERVICE CORP 🇺🇸 US 0 5 82 CAIDA
AS40710 College of Lake County 🇺🇸 US 0 2 81 CAIDA
AS13953 Sauk Valley Community College 🇺🇸 US 0 1 78 CAIDA
AS6479 McHenryCom Company 🇺🇸 US 0 1 77 CAIDA
AS26255 Oakton Community College 🇺🇸 US 0 3 77 CAIDA
AS33019 Wheaton College 🇺🇸 US 0 3 72 CAIDA
AS54201 We Link Networks LLC 🇺🇸 US 0 27 70 inferred
AS7767 Encyclopaedia Britannica 🇺🇸 US 0 2 69 CAIDA
AS103 Northwestern University 🇺🇸 US 0 27 62 CAIDA
AS35928 BECKMAN COULTER, INC. 🇺🇸 US 0 89 61 CAIDA
AS21908 Family Video Movie Club Inc. 🇺🇸 US 0 20 60 CAIDA
AS17091 Hollister Incorporated 🇺🇸 US 0 2 60 CAIDA
AS16706 NORTHEAST ORTHOPAEDIC CLINIC, LLP 🇺🇸 US 0 16 58 CAIDA
AS20310 Illinois Tool Works 🇺🇸 US 0 4 57 CAIDA
AS30553 Thorek Memorial Hospital 🇺🇸 US 0 3 52 CAIDA
AS397936 DC COMPUTERS 🇺🇸 US 0 4 51 CAIDA
AS64230 Motherboard Express Company 🇺🇸 US 0 1 51 CAIDA
AS14711 INGERSOLL CUTTING TOOL COMPANY 🇺🇸 US 0 4 51 CAIDA
AS393323 Waterfurnace International, Inc 🇺🇸 US 0 2 49 CAIDA
AS1777 Saint Xavier University 🇺🇸 US 0 3 48 CAIDA
AS13744 TYNDALE HOUSE PUBLISHERS 🇺🇸 US 0 2 47 CAIDA
AS36478 Alliant Credit Union 🇺🇸 US 0 3 47 CAIDA
AS40801 Lewis University 🇺🇸 US 0 2 46 CAIDA
AS396247 Adlai E. Stevenson High School 🇺🇸 US 0 2 46 CAIDA
AS396831 - 0 2 46 CAIDA
AS26820 Herff Jones 🇺🇸 US 0 4 44 CAIDA
AS14046 Indiana Telephone Network 🇺🇸 US 0 1 43 CAIDA
AS36460 Watts Water Technologies, Inc. 🇺🇸 US 0 2 43 CAIDA
AS398135 SKYWEB OF ILLINOIS, INC. 🇺🇸 US 0 1 43 CAIDA
AS19941 Concordia University Chicago 🇺🇸 US 0 1 43 CAIDA
AS25716 Trane Technologies Company LLC 🇺🇸 US 0 6 43 CAIDA
AS20429 Guitar Center 🇺🇸 US 0 3 43 CAIDA
AS396492 dbISP, LLC 🇺🇸 US 0 2 43 CAIDA
AS26532 Mac Lean-Fogg Company 🇺🇸 US 0 2 43 CAIDA
AS26541 GuavaTech Inc. 🇺🇸 US 0 7 43 CAIDA
AS32304 Natus Medical Inc. 🇺🇸 US 0 2 43 CAIDA
AS398833 Bombardier Inc. 🇨🇦 CA 0 16 43 CAIDA
AS26966 Spraying Systems Co. 🇺🇸 US 0 2 43 CAIDA
AS214585 IBM Deutschland GmbH 🇩🇪 DE 0 4 43 inferred
AS393677 Hematogenix Laboratory Services, LLC 🇺🇸 US 0 2 43 CAIDA
AS27004 Star Financial Bank 🇺🇸 US 0 2 43 CAIDA
AS63310 NABP 🇺🇸 US 0 1 43 CAIDA
AS62826 CHICAGO SYMPHONY ORCHESTRA 🇺🇸 US 0 1 43 CAIDA
AS62569 - 0 1 43 CAIDA
AS20441 SAGILITY LLC 🇺🇸 US 0 1 43 CAIDA
AS401245 GOSHEN HEALTH 🇺🇸 US 0 1 43 CAIDA
AS13430 DC COMPUTERS 🇺🇸 US 0 1 43 CAIDA
AS40417 Interactions Corporation 🇺🇸 US 0 5 43 CAIDA
AS393998 Elk Grove Village Police Department 🇺🇸 US 0 1 42 CAIDA
AS30573 Old Second Bancorp 🇺🇸 US 0 1 42 CAIDA
AS397512 The College of American Pathologists 🇺🇸 US 0 1 42 CAIDA
AS400267 FOUR WINDS CASINO AND RESORT 🇺🇸 US 0 2 42 inferred
AS33461 COMMUNITY FOUNDATION OF NW INDIANA 🇺🇸 US 0 2 42 CAIDA
AS46398 Taylor Corporation 🇺🇸 US 0 1 42 CAIDA
AS47092 ITR America, LLC 🇺🇸 US 0 1 42 CAIDA
AS395451 HostIT Servers 🇺🇸 US 0 1 42 CAIDA
AS402427 Nexstar Media Inc. 🇺🇸 US 0 2 42 CAIDA
AS393745 Wi-Tronix LLC 🇺🇸 US 0 1 42 CAIDA
AS394845 REMPREX, LLC 🇺🇸 US 0 2 42 CAIDA
AS4912 CENTIER BANK 🇺🇸 US 0 1 42 CAIDA
AS7380 Avant, Inc. 🇺🇸 US 0 1 41 CAIDA
AS30302 ASPEN DENTAL MANAGEMENT, INC. 🇺🇸 US 0 3 41 CAIDA
AS394518 Consolidated High School District 230 🇺🇸 US 0 1 41 CAIDA
AS394115 Rehabilitation Institute of Chicago 🇺🇸 US 0 1 41 CAIDA
AS63487 Fellowes Inc. 🇺🇸 US 0 1 41 CAIDA
AS400652 Keystone RV Company 🇺🇸 US 0 1 41 CAIDA
AS29891 National Cable Communications LLC 🇺🇸 US 0 1 41 CAIDA
AS18743 MENNONITE MUTUAL AID 🇺🇸 US 0 1 41 CAIDA
AS26028 Panduit Corp. 🇺🇸 US 0 3 41 CAIDA
AS27369 Swedish Covenant Hospital 🇺🇸 US 0 2 41 CAIDA
AS393505 Centra Credit Union 🇺🇸 US 0 2 41 CAIDA
AS398030 ATF, INC. 🇺🇸 US 0 1 41 CAIDA
AS32321 NEWARK NET 🇺🇸 US 0 1 41 CAIDA
AS399514 Horizon Bank 🇺🇸 US 0 1 41 CAIDA
AS395835 AJ Antunes & Co 🇺🇸 US 0 1 40 CAIDA
AS63207 Lakeshore Bone & Joint, Institute P.C. 🇺🇸 US 0 1 40 CAIDA
AS32280 The E.W. Scripps Company 🇺🇸 US 0 2 40 CAIDA
AS22187 Rauland-Borg Corporation 🇺🇸 US 0 2 40 CAIDA
AS54066 Wurth Baer Supply Company 🇺🇸 US 0 1 40 CAIDA
AS397567 Alera Group, Inc 🇺🇸 US 0 1 40 CAIDA
AS14386 Com-graphics, Inc. 🇺🇸 US 0 1 40 CAIDA
AS395691 XTTRIUM LABORATORIES, Inc. 🇺🇸 US 0 1 40 CAIDA
AS40520 Saint Bernard Hospital 🇺🇸 US 0 1 40 CAIDA
AS396036 CPI 🇺🇸 US 0 1 39 CAIDA
AS17196 College of duPage 🇺🇸 US 0 1 39 CAIDA
AS32985 Follett Content 🇺🇸 US 0 1 39 CAIDA
AS31790 S&C Electric Canada Ltd. 🇨🇦 CA 0 3 37 CAIDA
AS401102 Watchfire 🇺🇸 US 0 1 37 CAIDA
AS46815 - 0 1 37 CAIDA
AS15120 Rockford Health System 🇺🇸 US 0 1 37 CAIDA
AS16627 Board of Commissioners of the County of Allen 🇺🇸 US 0 1 36 CAIDA
AS25978 Rush University Medical Center 🇺🇸 US 0 5 36 CAIDA
AS54671 WALSWORTH PUBLISHING COMPANY 🇺🇸 US 0 4 36 CAIDA
AS393893 Alliance Cloud Services LLC 🇺🇸 US 0 1 36 CAIDA
AS63206 INOVA Federal Credit Union 🇺🇸 US 0 1 36 CAIDA
AS46459 Alarm Detection Systems, Inc 🇺🇸 US 0 3 35 CAIDA
AS26450 CTDI 🇺🇸 US 0 2 35 inferred
AS22448 Microcomputer Specialists, Inc. 🇺🇸 US 0 1 35 CAIDA
AS401671 ACCESSPARKS LLC 🇺🇸 US 0 0 35 inferred
AS394918 TrueBlue, Inc. 🇺🇸 US 0 1 35 CAIDA
AS400017 Ruoff Mortgage 🇺🇸 US 0 1 34 CAIDA
AS21796 WITHAM HOSPITAL 🇺🇸 US 0 1 34 CAIDA
AS27358 TRUSTMARK INSURANCE CO. 🇺🇸 US 0 3 34 CAIDA
AS53617 ECS Financial Services, Inc. 🇺🇸 US 0 2 34 CAIDA
AS62544 Open Air Wireless, LLC. 🇺🇸 US 0 2 34 CAIDA
AS21514 LEGACY MARKETING PARTNERS, L.L.C. 🇺🇸 US 0 1 33 CAIDA
AS13983 ALE Solutions Inc 🇺🇸 US 0 1 33 CAIDA
AS17010 Hoosier Energy Rural Electric Cooperative, Inc. 🇺🇸 US 0 1 32 CAIDA
AS398752 Our Sunday Visitor 🇺🇸 US 0 1 30 CAIDA
AS393781 Helm Group, Inc. 🇺🇸 US 0 1 30 CAIDA
AS401202 Sound, Production & Lighting LLC 🇺🇸 US 0 1 27 CAIDA
AS23166 Norvax, LLC 🇺🇸 US 0 1 24 CAIDA
AS22034 MCMASTER CARR SUPPLY COMPANY 🇺🇸 US 0 5 23 CAIDA
AS19690 Hyatt Corporation 🇺🇸 US 0 9 22 CAIDA
AS399488 Demotte State Bank 🇺🇸 US 0 2 22 CAIDA
AS21611 Wilson Sporting Goods Co. 🇺🇸 US 0 1 20 CAIDA
AS19065 Levi, Ray & Shoup, Inc. 🇺🇸 US 0 9 18 CAIDA
AS25712 Computer Services Inc 🇺🇸 US 0 13 18 CAIDA
AS32375 The Herald-Palladium 🇺🇸 US 0 1 17 CAIDA
AS395028 The Reynolds and Reynolds Company 🇺🇸 US 0 1 17 CAIDA
AS53652 Providence Management and Development Company Incorporated 🇺🇸 US 0 1 17 CAIDA
AS393330 Circana LLC 🇺🇸 US 0 37 17 CAIDA
AS394926 The Reynolds and Reynolds Company 🇺🇸 US 0 1 17 CAIDA
AS395767 SUNCAST Corporation 🇺🇸 US 0 1 17 CAIDA
AS399553 Trustmark Health Benefits 🇺🇸 US 0 2 17 CAIDA
AS63014 McCormick Place 🇺🇸 US 0 1 17 CAIDA
AS396525 Grecian Delight Foods, Inc 🇺🇸 US 0 1 16 CAIDA
AS398018 Group M Worldwide, LLC 🇺🇸 US 0 1 16 CAIDA
AS46631 City of Wheaton 🇺🇸 US 0 1 15 CAIDA
AS22027 CBTS Technology Solutions LLC 🇺🇸 US 0 8 15 CAIDA
AS53643 Manteno Community Unit School District 5 🇺🇸 US 0 1 15 CAIDA
AS46246 Raptor Engineering, LLC 🇺🇸 US 0 4 14 CAIDA
AS19247 Northwestern Memorial Hospital 🇺🇸 US 0 4 12 CAIDA
AS11470 Radiological Society of North America 🇺🇸 US 0 3 12 CAIDA
AS395814 Wabash Valley Power Association Inc. 🇺🇸 US 0 1 11 CAIDA
AS20452 BALL STATE UNIVERSITY 🇺🇸 US 0 3 11 CAIDA
AS11770 Net 56, Inc. 🇺🇸 US 0 3 11 CAIDA
AS19131 Living Essentials, LLC 🇺🇸 US 0 2 9 CAIDA
AS22289 CEFCU 🇺🇸 US 0 1 9 CAIDA
AS54866 TCS Education System 🇺🇸 US 0 2 8 CAIDA
AS30395 SWEDISHAMERICAN HEALTH SYSTEM CORPORATION 🇺🇸 US 0 1 8 CAIDA
AS40234 Rapidparts, Inc. 🇺🇸 US 0 1 8 CAIDA
AS54246 AFNI, Inc. 🇺🇸 US 0 3 8 CAIDA
AS393405 Saint Charles Community Unit School District 303 🇺🇸 US 0 1 8 CAIDA
AS393708 4EOS 🇺🇸 US 0 1 8 CAIDA
AS394257 Springfield Clinic, LLP 🇺🇸 US 0 1 8 CAIDA
AS13349 TEACHERS CREDIT UNION 🇺🇸 US 0 3 7 CAIDA
AS40559 CROSSCOM NATIONAL, LLC 🇺🇸 US 0 1 6 CAIDA
AS40293 BENEDICTINE UNIVERSITY 🇺🇸 US 0 1 6 CAIDA
AS32649 FRANKLIN ELECTRIC CO., INC. 🇺🇸 US 0 1 6 CAIDA
AS395858 RAVINIA FESTIVAL ASSOCIATION 🇺🇸 US 0 1 6 CAIDA
AS401800 Illinois Secretary of State 🇺🇸 US 0 1 6 CAIDA
AS131993 UNIT 107 MULTISTORIED BUILDING, SEEPZ, 🇮🇳 IN 0 4 6 CAIDA
AS396210 Accreditation Association for Ambulatory Health Care, Inc. 🇺🇸 US 0 1 6 CAIDA
AS14688 GlobalView Software Inc. 🇺🇸 US 0 1 6 CAIDA
AS401801 Illinois Secretary of State 🇺🇸 US 0 1 6 CAIDA
AS401613 Four Seasons Heating & Air Conditioning, LLC 🇺🇸 US 0 1 6 CAIDA
AS53943 Paylocity Corporation 🇺🇸 US 0 7 6 CAIDA
AS53851 The Pampered Chef, Ltd. 🇺🇸 US 0 2 6 CAIDA
AS395505 iManage, LLC 🇺🇸 US 0 11 6 CAIDA
AS18784 McDonald's Corporation 🇺🇸 US 0 2 6 CAIDA
AS397934 Latitude AI LLC 🇺🇸 US 0 5 6 CAIDA
AS26950 Lippert Components Manufacturing, Inc. 🇺🇸 US 0 2 5 CAIDA
AS63328 Sweetwater Sound Inc 🇺🇸 US 0 1 4 CAIDA
AS19980 Career Education Corporation 🇺🇸 US 0 2 4 CAIDA
AS55152 The Fellowship 🇺🇸 US 0 1 4 CAIDA
AS30278 Equity Residential 🇺🇸 US 0 8 4 CAIDA
AS397694 SMG Security Holdings LLC 🇺🇸 US 0 1 4 CAIDA
AS11622 Orland Fire Protection District 🇺🇸 US 0 1 4 inferred
AS400505 HARRIS & HARRIS, LTD. 🇺🇸 US 0 1 4 CAIDA
AS17317 Thing5, LLC 🇺🇸 US 0 2 4 CAIDA
AS396307 Southern Imperial Inc. 🇺🇸 US 0 2 4 CAIDA
AS47020 Data Cave 🇺🇸 US 0 3 3 CAIDA
AS3751 Phonak, LLC 🇺🇸 US 0 1 3 CAIDA
AS394798 Chicago Park District 🇺🇸 US 0 1 3 CAIDA
AS62945 Cornerstone Information Systems, Inc. 🇺🇸 US 0 1 3 CAIDA
AS54792 Chicago White Sox, LTD. 🇺🇸 US 0 1 3 CAIDA
AS395581 Metal Management, Inc. 🇺🇸 US 0 1 3 CAIDA
AS33625 Corteva AgriScience LLC 🇺🇸 US 0 3 3 CAIDA
AS33512 Gateway Processing Services 🇺🇸 US 0 11 3 CAIDA
AS31755 Viskase Companies, Inc. 🇺🇸 US 0 2 3 CAIDA
AS30643 TTX Company 🇺🇸 US 0 5 3 CAIDA
AS22214 Medela Inc 🇺🇸 US 0 1 3 CAIDA
AS21680 Empower Retirement, LLC 🇺🇸 US 0 21 3 CAIDA
AS16563 Nexum, Inc. 🇺🇸 US 0 1 3 CAIDA
AS400977 Schneck Medical Center 🇺🇸 US 0 1 3 CAIDA
AS15303 First Trust Portfolios L.P. 🇺🇸 US 0 1 2 CAIDA
AS40203 GROWMARK, Inc. 🇺🇸 US 0 1 2 CAIDA
AS17167 Microchip Computer Solutions, Inc. 🇺🇸 US 0 2 2 CAIDA
AS14870 Flexera Software, LLC 🇺🇸 US 0 1 2 CAIDA
AS64255 Intercontinental Exchange, Inc. 🇺🇸 US 0 2 2 CAIDA
AS33442 Zebra Technologies Corporation 🇺🇸 US 0 26 2 CAIDA
AS27019 Ball Horticultural Company 🇺🇸 US 0 1 2 CAIDA
AS33477 Knox College 🇺🇸 US 0 1 2 CAIDA
AS46279 TechPro, Inc 🇺🇸 US 0 3 2 inferred
AS14579 Edward D. Jones & Co., L.P. 🇺🇸 US 0 12 2 CAIDA
AS401462 Subaru of Indiana Automotive, Inc. 🇺🇸 US 0 1 1 CAIDA
AS395428 Elmhurst University 🇺🇸 US 0 1 1 CAIDA
AS394254 BLUE SOFTWARE, LLC 🇺🇸 US 0 1 1 CAIDA
AS26822 DO IT BEST CORP. 🇺🇸 US 0 1 1 CAIDA
AS23247 Samtec, inc. 🇺🇸 US 0 2 1 CAIDA
AS401822 City of Rockford 🇺🇸 US 0 1 1 CAIDA
AS394026 Village of Schaumburg 🇺🇸 US 0 1 1 CAIDA
AS399484 Rockford University 🇺🇸 US 0 1 1 CAIDA
AS402166 Mannheim School District 83 🇺🇸 US 0 1 1 inferred
AS400019 Ruoff Mortgage 🇺🇸 US 0 1 1 CAIDA
AS15112 GATX Corporation 🇺🇸 US 0 1 1 CAIDA
AS395847 Maine Township High School District 207 🇺🇸 US 0 1 1 CAIDA
AS400718 Fort Wayne Community Schools 🇺🇸 US 0 1 1 CAIDA
AS393712 DMA 🇺🇸 US 0 1 1 CAIDA
Showing the 250 largest of 252 Show all 252

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.