AS401523 Auction Harmony

AUCTIONHARMONY - Auction Harmony · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#13,534largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#62,803of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS401523 in ASN lookup Look up an IP in this network (130.12.29.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

130.12.29.0/24

IPv6 prefixes

All 1 prefix.

2620:d0:e000::/48

Similar-sized networks in United States

ASNNameIPv4 addresses

AS401349#13531 ZOLL-LIFEVEST - ZOLL Medical Corporation256

AS401380#13532 CYBERFOREST-COMMUNICATION-AMERICAN - CyberForest256

AS401467#13533 ANDERSON-KELLY - Anderson-Kelly Associates, Inc.256

AS401555#13535 BLOCKCAST-CDN-01 - Blockcast Inc.256

AS401557#13536 LF73 - Plentek, LLC256

AS401623#13537 OMNISSA-ATL - Omnissa, LLC256

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