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AS16 Lawrence Berkeley National Laboratory

LBL - Lawrence Berkeley National Laboratory · registered in the United States

IPv4 addresses131,0764 prefixes · 0.004% of announced IPv4
Rank in United States#505largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#1,545of 79,396 networks with IPv4
IPv61 x /483 prefixes
CountryUnited States18,679 ASNs registered there
Open AS16 in ASN lookup Look up an IP in this network (128.3.0.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

  • 128.3.0.0/16
  • 131.243.0.0/16
  • 137.164.23.36/31
  • 137.164.50.214/31

IPv6 prefixes

All 3 prefixes.

  • 2607:f380:1::118:9a41:7240/123
  • 2607:f380:1::118:9a43:2d60/123
  • 2620:83:8000::/48

Other ASNs named Lawrence Berkeley National Laboratory

1 other network uses the same organisation name; together with AS16 they announce 131,848 IPv4 addresses.

ASNNameIPv4 addresses
AS63331LBL-2 - Lawrence Berkeley National Laboratory US772

Similar-sized networks in United States

ASNNameIPv4 addresses
AS36081#502 STATE-OF-COLORADO-MNT-NETWORK - The Governor's Office of Information Technology131,328
AS3676#503 UIOWA-AS - University of Iowa131,326
AS5739#504 UCSC - University of California, Santa Cruz131,076
AS10242#506 USINTERNET - US Internet Corp131,072
AS3778#507 TEMPLE - Temple University131,072
AS3794#508 TAMU - Texas A&M University131,072

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