AS21534 BroadSoft, Inc.

AS21534 - BroadSoft, Inc. · registered in the United States

IPv4 addresses6,40013 prefixes · <0.001% of announced IPv4

Rank in United States#3,716largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#12,005of 79,396 networks with IPv4

IPv68 x /485 prefixes

CountryUnited States18,679 ASNs registered there

Open AS21534 in ASN lookup Look up an IP in this network (128.177.14.1) All networks in United States

IPv4 prefixes

All 13 prefixes, in address order.

128.177.14.0/24
128.177.36.0/24
135.84.168.0/22
135.84.172.0/23
135.84.174.0/24
139.177.64.0/23
139.177.68.0/22
139.177.76.0/24
139.177.78.0/24
139.177.94.0/23
199.19.197.0/24
199.19.199.0/24
199.59.64.0/22

IPv6 prefixes

All 5 prefixes.

2a05:4200::/47
2a05:4200:4::/47
2a05:4200:b::/48
2a05:4200:c::/47
2a05:4200:e::/48

Other ASNs named BroadSoft, Inc.

1 other network uses the same organisation name; together with AS21534 they announce 6,656 IPv4 addresses.

ASNNameIPv4 addresses

AS13813BROADSOFT-INC-NORTH-AMERICA - BroadSoft, Inc. US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS398493#3713 SYSTEMINPLACE - System In Place6,400

AS14413#3714 LINKEDIN - LinkedIn Corporation6,400

AS29752#3715 ZEN-SDN - Zenlayer Inc6,400

AS402931#3717 ADAPTGROUP - AdaptGroup6,400

AS14821#3718 VLAN24-INC - Vlan246,400

AS54536#3719 ADAMSSTATE - Adams State University6,400

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