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AS3356
AS3356 Level 3 Parent, LLC
LEVEL3 - Level 3 Parent, LLC · registered in the United States
IPv4 addresses 27,412,864 4,658 prefixes · 0.875% of announced IPv4
Rank in United States #8 largest network in US by IPv4 space, of 18,338 · 2.01% of US
Rank worldwide #14 of 79,396 networks with IPv4
IPv6 18 x /32 (1,229,116 x /48) 321 prefixes
Other ASNs named Level 3 Parent, LLC
8 other networks use the same organisation name; together with AS3356 they announce 32,815,616 IPv4 addresses.
ASN Name IPv4 addresses
AS3549 LVLT-3549 - Level 3 Parent, LLC US 4,521,728
AS10753 LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE - Level 3 Parent, LLC US 640,512
AS203 CENTURYLINK-LEGACY-LVLT-203 - Level 3 Parent, LLC US 230,912
AS1 LVLT-1 - Level 3 Parent, LLC US 7,296
AS202 CENTURYLINK-LEGACY-LVLT-202 - Level 3 Parent, LLC US 1,024
AS596 CENTURYLINK-LEGACY-LVLT-596 - Level 3 Parent, LLC US 512
AS18756 PATEAM - Level 3 Parent, LLC US 512
AS19094 RESERVED-IPADMIN - Level 3 Parent, LLC US 256
Similar-sized networks in United States
ASN Name IPv4 addresses
AS7922 #5 COMCAST-7922 - Comcast Cable Communications, LLC42,195,200
AS701 #6 UUNET - Verizon Business40,608,768
AS721 #7 DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD)29,541,376
AS174 #9 COGENT-174 - Cogent Communications, LLC24,663,935
AS396982 #10 GOOGLE-CLOUD-PLATFORM - Google LLC22,019,072
AS14618 #11 AMAZON-AES - Amazon.com, Inc.21,573,120
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources