206208 looking glass

AS33657 Comcast Cable Communications, LLC 🇺🇸 US

Announcing 269 prefixes, seen at the RIS collectors.

IPv4 prefixes
27
11,008 (43 × /24)
IPv6 prefixes
242
242 × /48
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
125
transit customers observed
Customer cone
144
ASes reachable through it

Registry and operator data

AS number
AS33657
Name
Comcast Cable Communications, LLC
Organisation
Comcast - Baltimore and D.C.
Country
🇺🇸 US
RIR
ARIN
Allocated
2005-02-16
Network type
Cable/DSL/ISP
Scope
Regional
Peering policy
Restrictive
PeeringDB
net/10082
Facilities
1

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

264 valid (98.1%) 0 invalid (0.0%) 5 no ROA (1.9%)

Upstreams

Networks seen providing transit to this one

Network Country Cone IPv4 prefixes Paths Source
AS3356 Lumen (Level 3) 🇺🇸 US 71,417 2,086 1,581 CAIDA
AS7922 Comcast Cable Communications, LLC 🇺🇸 US 27,839 426 13,222 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
AS27026 networkMaryland 🇺🇸 US 24 26 6 CAIDA
AS22694 Versant Media Group, Inc. 🇺🇸 US 2 2 41 CAIDA
AS17035 NBCUniversal 🇺🇸 US 2 38 33 CAIDA
AS27016 United States Nuclear Regulatory Commission 🇺🇸 US 0 21 612 CAIDA
AS11790 Random House, Inc. 🇺🇸 US 0 18 388 CAIDA
AS394077 Lifebridge Health, Inc. 🇺🇸 US 0 11 255 CAIDA
AS32073 Montgomery County Public Schools 🇺🇸 US 0 13 219 CAIDA
AS22101 Cyber Point International, LLC 🇺🇸 US 0 4 172 CAIDA
AS53373 Mathematica, Inc. 🇺🇸 US 0 6 168 CAIDA
AS17190 Washington Metropolitan Area Transit Authority 🇺🇸 US 0 6 142 CAIDA
AS16463 Data Processing Solutions, Inc. 🇺🇸 US 0 3 129 CAIDA
AS2703 - 0 3 129 CAIDA
AS25716 Trane Technologies Company LLC 🇺🇸 US 0 6 129 CAIDA
AS11951 Medical Computer Systems 🇺🇸 US 0 10 105 CAIDA
AS572 Greater Baltimore Medical Center Inc 🇺🇸 US 0 4 90 CAIDA
AS26522 Stevenson University 🇺🇸 US 0 4 86 CAIDA
AS40410 FRIT 🇺🇸 US 0 67 86 CAIDA
AS19936 Gordon Food Service 🇺🇸 US 0 6 86 CAIDA
AS22602 Experient Inc. 🇺🇸 US 0 2 86 CAIDA
AS400902 Gaylord National Resort & Convention Center 🇺🇸 US 0 3 82 CAIDA
AS398820 Eagle Alliance 🇺🇸 US 0 3 80 CAIDA
AS53350 Embassy of Hungary 🇺🇸 US 0 2 79 CAIDA
AS16881 Prall, Inc., David C 🇺🇸 US 0 1 78 CAIDA
AS2384 Architect of the Capitol 🇺🇸 US 0 4 77 CAIDA
AS10918 Accurant Cloud Services LLC 🇺🇸 US 0 2 69 CAIDA
AS26868 NCTA - The Internet & Television Association 🇺🇸 US 0 1 66 CAIDA
AS40954 JM Family Enterprises Inc. 🇺🇸 US 0 8 64 CAIDA
AS32291 ANNE ARUNDEL MEDICAL CENTER 🇺🇸 US 0 3 61 CAIDA
AS13511 Univision Communications Inc. 🇺🇸 US 0 12 51 CAIDA
AS27336 Sentara Healthcare 🇺🇸 US 0 22 51 CAIDA
AS400678 LIDL US OPERATIONS, LLC 🇺🇸 US 0 3 50 CAIDA
AS20137 USAGM 🇺🇸 US 0 6 46 CAIDA
AS40857 IT-CNP, Inc. 🇺🇸 US 0 4 45 CAIDA
AS12245 Peninsula Regional Medical Center 🇺🇸 US 0 3 45 CAIDA
AS36457 District Photo, Inc. 🇺🇸 US 0 2 44 CAIDA
AS40391 CHS COOPERATIVES FOUNDATION 🇺🇸 US 0 7 44 CAIDA
AS26020 Space Telescope Science Institute 🇺🇸 US 0 4 44 CAIDA
AS46187 International Spy Museum 🇺🇸 US 0 1 43 CAIDA
AS33506 COMMPUTERCATIONS 🇺🇸 US 0 1 43 CAIDA
AS21683 Dalko, LLC 🇺🇸 US 0 1 43 CAIDA
AS22962 The Kennedy Center 🇺🇸 US 0 1 43 CAIDA
AS25696 - 0 1 43 CAIDA
AS62957 HOSPITALITY NETWORK, LLC 🇺🇸 US 0 37 43 CAIDA
AS30385 Perdue Farms Incorporated 🇺🇸 US 0 2 43 CAIDA
AS46784 Davis Polk & Wardwell, LLP 🇺🇸 US 0 22 43 CAIDA
AS22593 Blue Cross and Blue Shield of North Carolina 🇺🇸 US 0 6 43 CAIDA
AS4880 Lifeline Systems, Company 🇺🇸 US 0 6 43 CAIDA
AS5721 National Defense University 🇺🇸 US 0 2 43 CAIDA
AS46200 IT Curves 🇺🇸 US 0 1 42 CAIDA
AS36151 The Alta Condominium Unit Owner's Association 🇺🇸 US 0 1 42 CAIDA
AS36040 Google (Global Cache) 🇺🇸 US 0 86 42 CAIDA
AS15134 Prince William County Service Authority 🇺🇸 US 0 1 42 CAIDA
AS22815 Kelly and Associates Insurance Group 🇺🇸 US 0 1 42 CAIDA
AS3705 U.S. Government Publishing Office 🇺🇸 US 0 2 42 CAIDA
AS29865 Continental Realty Corporation 🇺🇸 US 0 1 41 CAIDA
AS19316 Quadrangle Development Corporation 🇺🇸 US 0 4 41 CAIDA
AS33738 United States Holocaust Memorial Museum 🇺🇸 US 0 1 41 CAIDA
AS397487 Baltimore Ravens Limited Partnership 🇺🇸 US 0 1 41 CAIDA
AS33170 Morgan State University 🇺🇸 US 0 1 41 CAIDA
AS12222 Akamai Technologies, Inc. 🇺🇸 US 0 32 40 CAIDA
AS400044 Chesapeake Employers Insurance Company 🇺🇸 US 0 1 40 CAIDA
AS18733 ZeniMax Media Incorporated 🇺🇸 US 0 6 40 CAIDA
AS14246 Thales Communications Inc. 🇺🇸 US 0 1 39 CAIDA
AS1358 Hughes Network Systems, LLC 🇺🇸 US 0 8 39 CAIDA
AS31902 Open Technology Solutions, LLC 🇺🇸 US 0 5 38 CAIDA
AS33174 Prince William County Government Department of IT (DoIT) 🇺🇸 US 0 3 36 inferred
AS396017 Comcast Cable Communications, LLC 🇺🇸 US 0 2 34 CAIDA
AS63336 Adventist Healthcare 🇺🇸 US 0 1 34 CAIDA
AS401533 TGS, LLC 🇺🇸 US 0 0 33 inferred
AS26793 ICS Advanced Technologies 🇺🇸 US 0 21 33 inferred
AS396222 Tenable, Inc. 🇺🇸 US 0 1 31 CAIDA
AS396848 Delaware Electric Cooperative, Inc. 🇺🇸 US 0 1 21 CAIDA
AS54849 Kane Warehousing, Inc 🇺🇸 US 0 1 21 CAIDA
AS11131 University of Maryland Baltimore County (UMBC) 🇺🇸 US 0 3 17 inferred
AS46624 Beebe Medical Center Inc. 🇺🇸 US 0 1 14 CAIDA
AS395145 McDonogh School, Inc. 🇺🇸 US 0 1 14 CAIDA
AS19320 Flextronics International USA, Inc. 🇺🇸 US 0 4 12 CAIDA
AS13628 AMERISOURCEBERGEN 🇺🇸 US 0 13 12 CAIDA
AS54201 We Link Networks LLC 🇺🇸 US 0 25 12 inferred
AS53862 McDaniel College 🇺🇸 US 0 1 9 CAIDA
AS22613 UNIVERSAL HEALTH SERVICES 🇺🇸 US 0 1 9 CAIDA
AS19574 Corporation Service Company 🇺🇸 US 0 6 8 CAIDA
AS30641 STATE OF DELAWARE 🇺🇸 US 0 2 8 CAIDA
AS393706 Nelson Cable, Inc 🇺🇸 US 0 5 8 CAIDA
AS401366 Vox Flow LLC 🇺🇸 US 0 2 7 CAIDA
AS14473 Inside The Internet, Inc 🇺🇸 US 0 2 6 CAIDA
AS46988 Maryland Institute College of Art 🇺🇸 US 0 1 6 CAIDA
AS14862 Oceaneering International, Inc. 🇺🇸 US 0 5 6 CAIDA
AS16409 PBW Communications, LLC 🇺🇸 US 0 3 6 CAIDA
AS46084 ASRC FEDERAL HOLDING COMPANY, LLC 🇺🇸 US 0 2 6 CAIDA
AS395009 Vectorworks, Inc. 🇺🇸 US 0 2 6 CAIDA
AS14036 Stack AV 🇺🇸 US 0 1 4 CAIDA
AS40833 The New York Times Company 🇺🇸 US 0 4 4 CAIDA
AS42228 Brightstar Limited 🇬🇧 GB 0 10 4 CAIDA
AS30330 Automotive Rentals, Inc. 🇺🇸 US 0 3 4 inferred
AS16505 HTF 🇺🇸 US 0 1 4 CAIDA
AS394984 Fragomen, Del Rey, Bernsen & Loewy, LLP 🇺🇸 US 0 7 4 CAIDA
AS396514 Carey International, Inc. 🇺🇸 US 0 1 4 CAIDA
AS397154 Granules Consumer Health 🇺🇸 US 0 1 4 CAIDA
AS13582 Cowan Systems, LLC 🇺🇸 US 0 1 4 CAIDA
AS10440 Merkle Inc. 🇺🇸 US 0 4 4 CAIDA
AS400467 Iron Bow Technologies, LLC 🇺🇸 US 0 1 4 CAIDA
AS7820 Tower Federal Credit Union 🇺🇸 US 0 2 4 CAIDA
AS393997 Red Coats, Inc 🇺🇸 US 0 1 3 CAIDA
AS14384 HOST DESIGNS, LLC 🇺🇸 US 0 1 3 CAIDA
AS36486 AMTOTE INTERNATIONAL, INC. 🇺🇸 US 0 1 3 CAIDA
AS21963 Agency Insurance Company 🇺🇸 US 0 1 3 CAIDA
AS32837 Williams & Connolly, LLP 🇺🇸 US 0 2 2 CAIDA
AS394024 American Speech-Language-Hearing Association 🇺🇸 US 0 1 2 CAIDA
AS18967 Goucher College 🇺🇸 US 0 1 2 CAIDA
AS4977 Vencore Services and Solutions, Inc. 🇺🇸 US 0 7 2 CAIDA
AS22414 Craigslist, Inc. 🇺🇸 US 0 2 2 CAIDA
AS393432 Nanticoke Memorial Hospital INC 🇺🇸 US 0 1 2 CAIDA
AS27003 American Bankers Association 🇺🇸 US 0 1 2 CAIDA
AS11362 Vector Data Systems LLC 🇺🇸 US 0 1 2 CAIDA
AS33512 Gateway Processing Services 🇺🇸 US 0 11 2 CAIDA
AS396218 National Rifle Association of America 🇺🇸 US 0 2 2 CAIDA
AS22596 UNIVERSAL HEALTH SERVICES 🇺🇸 US 0 1 2 CAIDA
AS14830 ProFund Advisors LLC 🇺🇸 US 0 2 1 CAIDA
AS395481 i SW, LLC 🇺🇸 US 0 1 1 CAIDA
AS396921 U.S. Customs and Border Protection 🇺🇸 US 0 13 1 CAIDA
AS35777 LTN Global Communications Inc 🇺🇸 US 0 14 1 CAIDA
AS393473 Burris Logistics 🇺🇸 US 0 1 1 CAIDA
AS6092 Harford Community College 🇺🇸 US 0 1 1 CAIDA
AS394112 NTT Global Data Centers Americas, INC. 🇺🇸 US 0 1 1 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.