AS21508 Comcast Cable Communications, LLC

Looking Glass:

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

Country of Origin:

United States

Prefixes Originated (all): 231
Prefixes Originated (v4): 156
Prefixes Originated (v6): 75

Prefixes Announced (all): 343
Prefixes Announced (v4): 261
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): 47
BGP Peers Observed (v4): 46
BGP Peers Observed (v6): 7

IPs Originated (v4): 1,279,232
AS Paths Observed (v4): 1,458
AS Paths Observed (v6): 1,100

Average AS Path Length (all): 4.617
Average AS Path Length (v4): 4.626
Average AS Path Length (v6): 4.606

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
157.240.147.0/24	Facebook, Inc.
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	Seton Home Study School		AS399232
3	Virginia Credit Union, Inc.		AS393613
4	Infinitt North America, Inc.		AS63468
5	Standard Motor Products, Inc		AS22274
6	Telos Corporation		AS394058
7	WSP	X	AS397190
8	Fastly, Inc.	X	AS54113
9	Stihl Inc.		AS11679
10	Quest		AS19404
11	County of Chesterfield		AS62971
12	Gannet Fleming, Inc.		AS27341
13	WorldStrides		AS397039
14	EdgeConneX, INC		AS395441
15	Williams-Sonoma		AS17381
16	THE MARTIN AGENCY		AS30299
17	UNIVERSAL HEALTH SERVICES		AS397483
18	City of Richmond, Virginia		AS54883
19	Shenandoah University		AS19923
20	petersburg city public schools		AS399099
21	EPLUS, Inc.		AS15297
22			AS395527
23	Matthews International Corporation		AS54219
24	Virginia College Savings Plan		AS46643
25	Cloudflare, Inc.	X	AS13335
26	Drilling Info Inc.		AS398475
27	Newmarket Corporation		AS15173
28	Berkshire Hathaway Energy Company		AS399938
29	Apogee Telecom Inc.		AS400114
30	Digital Fortress, Inc.		AS11739
31	Shenandoah Valley Electric Cooperative		AS36244
32	HP Hood		AS32540
33	VCU HEALTH SYSTEM AUTHORITY		AS27326
34	Google LLC		AS36040
35	Framatome Inc.		AS396083
36	Virginia Housing Development Authority		AS23209
37	Virginia Information Technologies Agency (VITA)		AS14583
38	Louisa County Public Schools		AS399607
39	MGW Telephone Company, Inc.	X	AS40641
40	Gamewood Technology Group, Inc.		AS393591
41	Terraservers Services, LLC		AS402549
42	Mary Washington Hospital, Inc.		AS36364
43	Augusta Health Care, Inc		AS395772
44	County of Henrico		AS18773
45	Loudoun Water		AS396452
46	Crutchfield New Media LLC	X	AS54391

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

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