AS21508 Comcast Cable Communications, LLC

Looking Glass:

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

Country of Origin:

United States

Prefixes Originated (all): 229
Prefixes Originated (v4): 157
Prefixes Originated (v6): 72

Prefixes Announced (all): 351
Prefixes Announced (v4): 273
Prefixes Announced (v6): 78

RPKI Originated Valid (all): 222
RPKI Originated Valid (v4): 150
RPKI Originated Valid (v6): 72

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

BGP Peers Observed (all): 49
BGP Peers Observed (v4): 48
BGP Peers Observed (v6): 6

IPs Originated (v4): 1,280,256
AS Paths Observed (v4): 1,455
AS Paths Observed (v6): 1,058

Average AS Path Length (all): 4.584
Average AS Path Length (v4): 4.614
Average AS Path Length (v6): 4.543

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
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
50.219.12.0/22	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
67.187.0.0/19	Comcast Cable Communications, Inc.
68.85.70.0/23	Comcast Cable Communications, LLC (C11414327)
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.
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 (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. (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.
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
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
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.
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 (C11399273)
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. (C02191482)
141.104.0.0/16	Virginia Department of Education
157.240.147.0/24	Facebook, Inc.
157.240.148.0/24	Facebook, Inc.
162.151.58.0/23	Comcast Cable Communications, LLC (C11414333)
162.151.162.0/23	Various Registries (Maintained by ARIN)
162.151.255.0/24	Comcast Cable Communications, LLC (C11399266)
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
2001:558:701a::/48	Comcast Cable Communications, LLC
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
2001:559:84a7::/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
2001:55c:6000::/35	Comcast Cable Communications, LLC
2601:5c0::/26	Comcast Cable Communications, LLC
2603:25c0::/26	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	Berkshire Hathaway Energy Company		AS399938
3	LITTLER MENDELSON, P.C.		AS393415
4	MGW Telephone Company, Inc.	X	AS40641
5	petersburg city public schools		AS399099
6	Mary Washington Hospital, Inc.		AS36364
7	Google LLC		AS36040
8	Loudoun Water		AS396452
9	EdgeConneX, INC		AS395441
10	Terraservers Services, LLC		AS402549
11	County of Chesterfield		AS62971
12	WSP	X	AS397190
13	Augusta Health Care, Inc		AS395772
14	Drilling Info Inc.		AS398475
15	Santander Global Technology and Operations, S.L.		AS2134
16	Seton Home Study School		AS399232
17	City of Richmond, Virginia		AS54883
18	WorldStrides		AS397039
19	Gamewood Technology Group, Inc.		AS393591
20	Shenandoah Valley Electric Cooperative		AS36244
21	THE MARTIN AGENCY		AS30299
22	Virginia Housing Development Authority		AS23209
23	Williams-Sonoma		AS17381
24	Crutchfield New Media LLC	X	AS54391
25	Virginia Information Technologies Agency (VITA)		AS14583
26	County of Henrico		AS18773
27	Bank of America, National Association		AS10794
28	Standard Motor Products, Inc		AS22274
29	Apogee Telecom Inc.		AS400114
30	Cloudflare, Inc.	X	AS13335
31	Infinitt North America, Inc.		AS63468
32	Gannet Fleming, Inc.		AS27341
33	Matthews International Corporation		AS54219
34	Newmarket Corporation		AS15173
35	Louisa County Public Schools		AS399607
36	Framatome Inc.		AS396083
37	Digital Fortress, Inc.		AS11739
38	HP Hood		AS32540
39	Stihl Inc.		AS11679
40	EPLUS, Inc.		AS15297
41	Virginia College Savings Plan		AS46643
42	Quest		AS19404
43			AS395527
44	Virginia Credit Union, Inc.		AS393613
45	Telos Corporation		AS394058
46	UNIVERSAL HEALTH SERVICES		AS397483
47	VCU HEALTH SYSTEM AUTHORITY		AS27326
48	Shenandoah University		AS19923

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

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