AS21508 Comcast Cable Communications, LLC

Looking Glass:

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

Country of Origin:

United States

Prefixes Originated (all): 230
Prefixes Originated (v4): 155
Prefixes Originated (v6): 75

Prefixes Announced (all): 344
Prefixes Announced (v4): 262
Prefixes Announced (v6): 82

RPKI Originated Valid (all): 224
RPKI Originated Valid (v4): 149
RPKI Originated Valid (v6): 75

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

BGP Peers Observed (all): 48
BGP Peers Observed (v4): 47
BGP Peers Observed (v6): 7

IPs Originated (v4): 1,278,976
AS Paths Observed (v4): 1,477
AS Paths Observed (v6): 1,085

Average AS Path Length (all): 4.617
Average AS Path Length (v4): 4.643
Average AS Path Length (v6): 4.582

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 (C11414332)
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
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 (C02607899)
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. (C05647262)
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. (C01622089)
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:c4c8::/48	Comcast Cable Communications, LLC
2001:559:c4c9::/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	Gannet Fleming, Inc.		AS27341
3	Shenandoah Valley Electric Cooperative		AS36244
4	THE MARTIN AGENCY		AS30299
5	Apogee Telecom Inc.		AS400114
6	Loudoun Water		AS396452
7	Framatome Inc.		AS396083
8			AS395527
9	EPLUS, Inc.		AS15297
10	County of Chesterfield		AS62971
11	Virginia College Savings Plan		AS46643
12	Gamewood Technology Group, Inc.		AS393591
13	Terraservers Services, LLC		AS402549
14	UNIVERSAL HEALTH SERVICES		AS397483
15	Shenandoah University		AS19923
16	petersburg city public schools		AS399099
17	Bank of America, National Association		AS10794
18	Louisa County Public Schools		AS399607
19	EdgeConneX, INC		AS395441
20	Augusta Health Care, Inc		AS395772
21	Newmarket Corporation		AS15173
22	WorldStrides		AS397039
23	MGW Telephone Company, Inc.	X	AS40641
24	WSP	X	AS397190
25	Williams-Sonoma		AS17381
26	Matthews International Corporation		AS54219
27	Standard Motor Products, Inc		AS22274
28	Telos Corporation		AS394058
29	Berkshire Hathaway Energy Company		AS399938
30	County of Henrico		AS18773
31	Quest		AS19404
32	Digital Fortress, Inc.		AS11739
33	Drilling Info Inc.		AS398475
34	Google LLC		AS36040
35	VCU HEALTH SYSTEM AUTHORITY		AS27326
36	Stihl Inc.		AS11679
37	Infinitt North America, Inc.		AS63468
38	Cloudflare, Inc.	X	AS13335
39	City of Richmond, Virginia		AS54883
40	Fastly, Inc.	X	AS54113
41	Crutchfield New Media LLC	X	AS54391
42	HP Hood		AS32540
43	Seton Home Study School		AS399232
44	Virginia Housing Development Authority		AS23209
45	Virginia Credit Union, Inc.		AS393613
46	Mary Washington Hospital, Inc.		AS36364
47	Virginia Information Technologies Agency (VITA)		AS14583

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

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