AS19148 Leaseweb USA, Inc.

LEASEWEB-USA-PHX - Leaseweb USA, Inc. · registered in the United States

IPv4 addresses64,25643 prefixes · 0.002% of announced IPv4

Rank in United States#1,350largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,532of 79,396 networks with IPv4

IPv681 x /32 (5,308,416 x /48)11 prefixes

CountryUnited States18,679 ASNs registered there

Open AS19148 in ASN lookup Look up an IP in this network (23.19.108.1) All networks in United States

IPv4 prefixes

All 43 prefixes, in address order.

23.19.108.0/22
23.19.132.0/22
23.19.144.0/22
23.19.172.0/22
23.81.16.0/21
23.81.48.0/20
23.81.80.0/22
23.81.88.0/21
23.81.120.0/21
23.81.128.0/21
23.81.144.0/21
23.81.172.0/22
23.81.192.0/21
23.81.204.0/22
23.81.216.0/22
23.81.224.0/19
23.82.60.0/22
23.82.152.0/21
23.83.128.0/21
23.83.144.0/21
23.83.184.0/22
23.105.56.0/21
64.120.56.0/21
64.120.72.0/22
64.120.124.0/22
89.249.194.0/23
108.62.16.0/21
108.62.144.0/21
108.62.224.0/21
152.163.48.0/22
152.163.76.0/22
152.163.124.0/22
152.163.152.0/22
152.163.176.0/22
152.163.200.0/22
152.163.228.0/22
152.163.252.0/22
173.208.64.0/22
173.208.127.0/24
191.101.26.0/24
191.101.174.0/24
212.42.196.0/24
212.42.206.0/24

IPv6 prefixes

All 11 prefixes.

2607:f5b0::/32
2a11:2340::/29
2a11:3940::/29
2a11:50c0::/29
2a11:7540::/29
2a11:9440::/29
2a11:a440::/29
2a11:c140::/29
2a11:dc40::/29
2a12:6400::/29
2a12:b600::/29

Other ASNs named Leaseweb USA, Inc.

8 other networks use the same organisation name; together with AS19148 they announce 1,311,232 IPv4 addresses.

ASNNameIPv4 addresses

AS395954LEASEWEB-USA-LAX - Leaseweb USA, Inc. US552,192

AS7203LEASEWEB-USA-SFO - Leaseweb USA, Inc. US180,480

AS30633LEASEWEB-USA-WDC - Leaseweb USA, Inc. US152,064

AS396190LEASEWEB-USA-SEA - Leaseweb USA, Inc. US127,488

AS27411LEASEWEB-USA-CHI - Leaseweb USA, Inc. US89,856

AS396362LEASEWEB-USA-NYC - Leaseweb USA, Inc. US66,560

AS394380LEASEWEB-USA-DAL - Leaseweb USA, Inc. US49,408

AS393886LEASEWEB-USA-MIA - Leaseweb USA, Inc. US28,928

Similar-sized networks in United States

ASNNameIPv4 addresses

AS22828#1347 ASN-FDA - United States Food and Drug Administration64,512

AS20012#1348 CHILLER-CITY - Interworks Networking Services64,512

AS32073#1349 MCPS-K12-MD-US - Montgomery County Public Schools64,512

AS18530#1351 ISOMEDIA-1 - Isomedia, Inc.64,256

AS3378#1352 MCI-ASN - Verizon Business64,256

AS4531#1353 MEDWEB - Nexsys Electronics, Inc.64,256

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