AS21508 Comcast Cable Communications, LLC

Looking Glass:

https://bgp.he.net/lg/21508

Country of Origin:

United States

Prefixes Originated (all): 228
Prefixes Originated (v4): 155
Prefixes Originated (v6): 73

Prefixes Announced (all): 338
Prefixes Announced (v4): 256
Prefixes Announced (v6): 82

RPKI Originated Valid (all): 222
RPKI Originated Valid (v4): 149
RPKI Originated Valid (v6): 73

RPKI Originated Invalid (all): 0
RPKI Originated Invalid (v4): 0
RPKI Originated Invalid (v6): 0

BGP Peers Observed (all): 52
BGP Peers Observed (v4): 51
BGP Peers Observed (v6): 7

IPs Originated (v4): 1,278,976
AS Paths Observed (v4): 1,455
AS Paths Observed (v6): 1,107

Average AS Path Length (all): 4.609
Average AS Path Length (v4): 4.628
Average AS Path Length (v6): 4.584

AS21508 IPv4 Peers

ASN	Name
AS7922	Comcast Cable Communications, LLC

AS21508 IPv6 Peers

ASN	Name
AS7922	Comcast Cable Communications, LLC

AS21508 IPv4 Peer Count

AS21508 IPv6 Peer Count

AS21508 IPv4 Prefixes Announced

AS21508 IPv6 Prefixes Announced

AS21508 IPv4 Prefixes Originated

AS21508 IPv6 Prefixes Originated

AS21508 IPv4 Route Propagation

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AS21508 IPv6 Route Propagation

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Prefix	Description	Visibility
Loading Prefixes...

Prefix	Description
23.25.96.0/19	Comcast Cable Communications, LLC
23.25.186.0/23	Comcast Cable Communications, LLC
23.31.96.0/20	Comcast Cable Communications, LLC
24.124.151.0/24	Comcast Cable Communications, LLC (C11414355)
24.124.162.0/23	Comcast Cable Communications, LLC
24.124.248.0/21	Comcast Cable Communications, LLC
24.131.0.0/20	Comcast Cable Communications Holdings, Inc (C02609445)
50.73.8.0/22	Comcast Cable Communications, LLC
50.73.224.0/20	Comcast Cable Communications, LLC
50.77.72.0/21	Comcast Cable Communications, LLC
50.78.232.0/21	Comcast Cable Communications, LLC
50.184.128.0/19	Comcast Cable Communications, LLC
50.186.32.0/19	Comcast Cable Communications, LLC
50.189.192.0/18	Comcast Cable Communications, LLC
50.193.246.0/23	Comcast Cable Communications, LLC
50.199.16.0/20	Comcast Cable Communications, LLC
50.204.101.0/24	Comcast Cable Communications, LLC
50.205.217.0/24	Comcast Cable Communications, LLC
50.210.0.0/20	Comcast Cable Communications, LLC
50.211.32.0/19	Comcast Cable Communications, LLC
50.215.32.0/19	Comcast Cable Communications, LLC
50.216.229.0/24	Comcast Cable Communications, LLC
50.217.1.0/24	Comcast Cable Communications, LLC
50.217.207.0/24	Comcast Cable Communications, LLC
50.218.47.0/24	Comcast Cable Communications, LLC
50.228.113.0/24	Comcast Cable Communications, LLC
50.229.113.0/24	Comcast Cable Communications, LLC
50.229.114.0/24	Comcast Cable Communications, LLC
50.235.34.0/24	Comcast Cable Communications, LLC
50.240.80.0/20	Comcast Cable Communications, LLC
50.242.32.0/19	Comcast Cable Communications, LLC
50.245.224.0/19	Comcast Cable Communications, LLC
50.251.112.0/20	Comcast Cable Communications, LLC
50.253.208.0/20	Comcast Cable Communications, LLC
64.139.66.0/24	Comcast Cable Communications, LLC
64.139.70.0/24	Comcast Cable Communications, LLC
64.139.79.0/24	Comcast Cable Communications, LLC
64.139.90.0/24	Comcast Cable Communications, LLC
66.208.224.0/23	Comcast Cable Communications, LLC
66.208.230.0/24	Comcast Cable Communications, LLC
66.208.234.0/24	Comcast Cable Communications, LLC
67.163.96.0/19	Comcast Cable Communications, Inc.
67.166.160.0/19	Comcast Cable Communications, Inc.
67.172.192.0/19	Comcast Cable Communications, LLC
67.174.64.0/20	Comcast Cable Communications (C01615143)
67.187.0.0/19	Comcast Cable Communications, Inc.
68.85.70.0/23	Comcast Cable Communications, LLC
68.85.214.0/24	Comcast Cable Communications, Inc.
68.85.226.0/24	Comcast Cable Communications, LLC
68.86.14.0/24	Comcast Cable Communications, Inc. (C01616570)
68.86.24.0/24	Comcast Cable Communications, Inc.
68.86.124.0/22	Comcast Cable Communications, Inc.
68.86.172.0/22	Comcast Cable Communications, Inc. (C01616569)
68.86.200.0/24	Comcast Cable Communications, Inc. (C01616569)
68.87.3.0/24	Comcast Cable Communications, Inc.
69.139.165.0/24	Comcast Cable Communications, LLC (C11414330)
69.139.186.0/24	Comcast Cable Communications, LLC (C11414330)
69.139.206.0/24	Comcast Cable Communications, LLC
69.139.223.0/24	Comcast Cable Communications, LLC (C11414332)
69.241.48.0/23	Comcast Cable Communications, LLC
69.241.85.0/24	Comcast Cable Communications, LLC (C11398900)
69.243.208.0/20	Comcast Cable Communications, Inc.
69.244.224.0/20	Comcast Cable Communications, Inc.
69.252.18.0/23	Comcast Cable Communications, Inc. (C01520264)
70.88.24.0/23	Comcast Cable Communications, LLC
70.88.164.0/24	Comcast Cable Communications, LLC
70.88.168.0/23	Comcast Cable Communications, LLC
70.88.184.0/21	Comcast Cable Communications, LLC
70.89.232.0/21	Comcast Cable Communications, LLC
70.91.162.0/24	Comcast Cable Communications, LLC
71.24.32.0/19	Comcast Cable Communications, LLC
71.56.160.0/19	Comcast Cable Communications Holdings, Inc
71.57.192.0/19	Comcast Cable Communications Holdings, Inc
71.62.0.0/16	Comcast Cable Communications Holdings, Inc
71.63.0.0/17	Comcast Cable Communications Holdings, Inc
71.197.0.0/20	Comcast Cable Communications, IP Services
71.206.128.0/18	Comcast Cable Communications, IP Services
71.207.128.0/19	Comcast Cable Communications, Inc. (C01520262)
73.12.0.0/17	Comcast IP Services, L.L.C.
73.31.0.0/16	Comcast IP Services, L.L.C.
73.40.0.0/17	Comcast Cable Communications, LLC
73.99.0.0/16	Comcast IP Services, L.L.C.
73.147.0.0/16	Comcast IP Services, L.L.C.
73.148.0.0/17	Comcast IP Services, L.L.C.
73.152.0.0/16	Comcast Cable Communications, LLC
73.171.0.0/17	Comcast IP Services, L.L.C. (C05217279)
73.177.128.0/17	Comcast IP Services, L.L.C. (C04861633)
73.216.0.0/16	Comcast Cable Communications, LLC
73.251.0.0/16	Comcast Cable Communications, LLC
74.92.186.0/23	Comcast Cable Communications, LLC
74.92.255.0/24	Comcast Cable Communications, LLC
74.93.116.0/22	Comcast Cable Communications, LLC
74.94.208.0/21	Comcast Cable Communications, LLC
74.95.96.0/22	Comcast Cable Communications, LLC
75.75.0.0/18	Comcast Cable Communications Holdings, Inc (C02610786)
75.75.64.0/21	Comcast Cable Communications Holdings, Inc
75.75.80.0/20	Comcast Cable Communications Holdings, Inc
75.75.96.0/19	Comcast Cable Communications Holdings, Inc (C02611439)
75.144.34.0/23	Comcast Cable Communications, LLC
75.145.196.0/22	Comcast Cable Communications, LLC
75.145.204.0/22	Comcast Cable Communications, LLC
75.145.240.0/21	Comcast Cable Communications, LLC
75.146.16.0/20	Comcast Cable Communications, LLC
75.146.87.0/24	Comcast Cable Communications, LLC
75.150.48.0/20	Comcast Cable Communications, LLC
76.26.64.0/19	Comcast Cable Communications, Inc.
76.27.160.0/19	Comcast Cable Communications, Inc.
76.104.0.0/17	Comcast Cable Communications, Inc.
76.111.176.0/20	Comcast Cable Communications, Inc.
76.120.192.0/18	Comcast Cable Communications, Inc. (C01743399)
76.123.0.0/18	Comcast Cable Communications, Inc.
96.75.192.0/19	Comcast Cable Communications, LLC
96.82.0.0/20	Comcast Cable Communications, LLC
96.82.24.0/21	Comcast Cable Communications, LLC
96.84.224.0/20	Comcast Cable Communications, LLC
96.85.32.0/20	Comcast Cable Communications, LLC
96.89.0.0/19	Comcast Cable Communications, LLC
96.94.208.0/20	Comcast Cable Communications, LLC
96.96.176.0/21	Comcast Cable Communications, LLC
96.108.106.0/23	Comcast Cable Communications, LLC (C11414348)
96.108.129.0/24	Comcast Cable Communications, LLC
96.108.130.0/23	Comcast Cable Communications, LLC
96.108.140.0/23	Comcast Cable Communications, LLC
96.109.65.0/24	Comcast Cable Communications, LLC
96.109.165.0/24	Comcast Cable Communications, LLC (C11399273)
96.109.200.0/22	Comcast Cable Communications, LLC
96.110.123.0/24	Comcast Cable Communications, LLC
96.110.200.0/22	Comcast Cable Communications, LLC
96.114.56.0/23	Comcast Cable Communications, LLC
96.124.244.0/22	Comcast Cable Communications, LLC (C10748396)
96.208.0.0/21	Comcast Cable Communications, LLC
96.216.16.0/22	Comcast Cable Communications, LLC
96.216.88.0/22	Comcast Cable Communications, LLC (C11414356)
98.244.64.0/18	Comcast Cable Communications, Inc.
98.249.0.0/18	Comcast Cable Communications, Inc.
141.104.0.0/16	Virginia Department of Education
157.240.148.0/24	Facebook, Inc.
162.151.58.0/23	Comcast Cable Communications, LLC
162.151.162.0/23	Comcast Cable Communications, LLC
162.151.255.0/24	Comcast Cable Communications, LLC
173.14.112.0/20	Comcast Cable Communications, LLC
173.14.193.0/24	Comcast Cable Communications, LLC
173.15.192.0/20	Comcast Cable Communications, LLC
173.163.192.0/20	Comcast Cable Communications, LLC
173.167.32.0/20	Comcast Cable Communications, LLC
173.167.48.0/22	Comcast Cable Communications, LLC
173.167.52.0/22	Comcast Cable Communications, LLC
173.167.80.0/22	Comcast Cable Communications, LLC
173.242.174.0/24	County of Henrico
174.53.64.0/19	Comcast Cable Communications, Inc.
174.179.0.0/16	Comcast Cable Communications, LLC
184.115.0.0/18	Comcast Cable Communications, LLC (C11380152)
198.90.112.0/22	WhiteSky Communications, LLC.
204.194.47.0/24	Va. Dept. of Rehabilitative Services
205.223.19.0/24	Virginia State Lottery Department

Prefix	Description	Visibility
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Prefix	Description
2001:558:180::/44	Comcast Cable Communications, LLC
2001:558:230::/44	Comcast Cable Communications, LLC
2001:558:501e::/48
2001:558:6023::/48
2001:558:6036::/48	Comcast Cable Communications, LLC
2001:558:701a::/48	Comcast Cable Communications, LLC
2001:558:a006::/48
2001:558:fe30::/48	Comcast Cable Communications, LLC
2001:559:8a::/48	Comcast Cable Communications, LLC
2001:559:c0::/48	Comcast Cable Communications, LLC
2001:559:f7::/48	Comcast Cable Communications, LLC
2001:559:220::/48	Comcast Cable Communications, LLC
2001:559:243::/48	Comcast Cable Communications, LLC
2001:559:280::/48	Comcast Cable Communications, LLC
2001:559:37d::/48	Comcast Cable Communications, LLC
2001:559:3ac::/48	Comcast Cable Communications, LLC
2001:559:3b9::/48	Comcast Cable Communications, LLC
2001:559:3c8::/48	Comcast Cable Communications, LLC
2001:559:40a::/48	Comcast Cable Communications, LLC
2001:559:49a::/48	Comcast Cable Communications, LLC
2001:559:49b::/48	Comcast Cable Communications, LLC
2001:559:53c::/48	Comcast Cable Communications, LLC
2001:559:5c9::/48	Comcast Cable Communications, LLC
2001:559:5db::/48	Comcast Cable Communications, LLC
2001:559:72b::/48	Comcast Cable Communications, LLC
2001:559:73c::/48	Comcast Cable Communications, LLC
2001:559:788::/48	Comcast Cable Communications, LLC
2001:559:78a::/48	Comcast Cable Communications, LLC
2001:559:79d::/48	Comcast Cable Communications, LLC
2001:559:79e::/48	Comcast Cable Communications, LLC
2001:559:7a7::/48	Comcast Cable Communications, LLC
2001:559:7db::/48	Comcast Cable Communications, LLC
2001:559:804c::/48	Comcast Cable Communications, LLC
2001:559:81bf::/48	Comcast Cable Communications, LLC
2001:559:81d7::/48	Comcast Cable Communications, LLC
2001:559:81d8::/48	Comcast Cable Communications, LLC
2001:559:8201::/48	Comcast Cable Communications, LLC
2001:559:82fd::/48	Comcast Cable Communications, LLC
2001:559:833e::/48	Comcast Cable Communications, LLC
2001:559:8416::/48	Comcast Cable Communications, LLC
2001:559:841c::/48	Comcast Cable Communications, LLC
2001:559:8445::/48	Comcast Cable Communications, LLC
2001:559:8535::/48	Comcast Cable Communications, LLC
2001:559:85c1::/48	Comcast Cable Communications, LLC
2001:559:85ff::/48	Comcast Cable Communications, LLC
2001:559:8604::/48	Comcast Cable Communications, LLC
2001:559:871a::/48	Comcast Cable Communications, LLC
2001:559:875f::/48	Comcast Cable Communications, LLC
2001:559:8773::/48	Comcast Cable Communications, LLC
2001:559:87b2::/48	Comcast Cable Communications, LLC
2001:559:c071::/48	Comcast Cable Communications, LLC
2001:559:c0f6::/48	Comcast Cable Communications, LLC
2001:559:c0f7::/48	Comcast Cable Communications, LLC
2001:559:c10a::/48	Comcast Cable Communications, LLC
2001:559:c174::/48	Comcast Cable Communications, LLC
2001:559:c1a5::/48	Comcast Cable Communications, LLC
2001:559:c1ca::/48	Comcast Cable Communications, LLC
2001:559:c28f::/48	Comcast Cable Communications, LLC
2001:559:c290::/48	Comcast Cable Communications, LLC
2001:559:c2a7::/48	Comcast Cable Communications, LLC
2001:559:c344::/48	Comcast Cable Communications, LLC
2001:559:c3e9::/48	Comcast Cable Communications, LLC
2001:559:c458::/48	Comcast Cable Communications, LLC
2001:559:c45f::/48	Comcast Cable Communications, LLC
2001:559:c460::/48	Comcast Cable Communications, LLC
2001:559:c4db::/48	Comcast Cable Communications, LLC
2001:559:c4f6::/48	Comcast Cable Communications, LLC
2001:559:c515::/48	Comcast Cable Communications, LLC
2001:559:c538::/48	Comcast Cable Communications, LLC
2601:5c0::/26	Comcast Cable Communications, LLC
2603:25c0::/26	Comcast Cable Communications, LLC
2603:3021::/32	Comcast Cable Communications, LLC
2603:308a::/32	Comcast Cable Communications, LLC (C11341853)

Bogon Prefixes
Prefix	Type	Status

Rank	Description	IPv6	Peer
1	Comcast Cable Communications, LLC	X	AS7922
2	Infinitt North America, Inc.		AS63468
3	Bank of America, National Association		AS10794
4	Santander Global Technology and Operations, S.L.		AS2134
5	Virginia Credit Union, Inc.		AS393613
6	EdgeConneX, INC		AS395441
7	MGW Telephone Company, Inc.	X	AS40641
8	Williams-Sonoma		AS17381
9	Augusta Health Care, Inc		AS395772
10	Standard Motor Products, Inc		AS22274
11	Seton Home Study School		AS399232
12	Virginia Housing Development Authority		AS23209
13	Matthews International Corporation		AS54219
14	WorldStrides		AS397039
15	Quest		AS19404
16	Drilling Info Inc.		AS398475
17	Louisa County Public Schools		AS399607
18	Terraservers Services, LLC		AS402549
19			AS395527
20	Shenandoah Valley Electric Cooperative		AS36244
21	Newmarket Corporation		AS15173
22	Shenandoah University		AS19923
23	Blue Ridge Bankshares, Inc.		AS10248
24	EPLUS, Inc.		AS15297
25	Gannet Fleming, Inc.		AS27341
26	County of Chesterfield		AS62971
27	Loudoun Water		AS396452
28	Google LLC		AS36040
29	Virginia Economic Development Partnership		AS54751
30	Framatome Inc.		AS396083
31	County of Henrico		AS18773
32	UNIVERSAL HEALTH SERVICES		AS397483
33	HP Hood		AS32540
34	Stihl Inc.		AS11679
35	LITTLER MENDELSON, P.C.		AS393415
36	Virginia Information Technologies Agency (VITA)		AS14583
37	THE MARTIN AGENCY		AS30299
38	Digital Fortress, Inc.		AS11739
39	Gamewood Technology Group, Inc.		AS393591
40	Crutchfield New Media LLC	X	AS54391
41	WSP	X	AS397190
42	City of Richmond, Virginia		AS54883
43	Fastly, Inc.	X	AS54113
44	petersburg city public schools		AS399099
45	Cloudflare, Inc.	X	AS13335
46	Apogee Telecom Inc.		AS400114
47	Berkshire Hathaway Energy Company		AS399938
48	Virginia College Savings Plan		AS46643
49	Telos Corporation		AS394058
50	VCU HEALTH SYSTEM AUTHORITY		AS27326
51	Mary Washington Hospital, Inc.		AS36364

Rank	Description	IPv4	Peer
1	Comcast Cable Communications, LLC	X	AS7922
2	MGW Telephone Company, Inc.	X	AS40641
3	WSP	X	AS397190
4	Fastly, Inc.	X	AS54113
5	TurnAround Factor, Inc.		AS394276
6	Cloudflare, Inc.	X	AS13335
7	Crutchfield New Media LLC	X	AS54391

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