AT&T Worldnet Services

IPv4 IPv6
Country United States United States
Assigned AS N/A
Updated 02 March 2026

We found 943 IPv4 networks operated by this organization. The first 100 networks are displayed.

Results sorted by network size.

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United States AT&T Worldnet Services
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Network: ATTSVC-12-80-0-0
CIDR: 12.80.0.0/14
IP Range: 12.80.0.0 - 12.83.255.255
Block size: 262,144
United States AT&T Worldnet Services
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Network: ATTSVC-12-72-0-0
CIDR: 12.72.0.0/15
IP Range: 12.72.0.0 - 12.73.255.255
Block size: 131,072
United States AT&T Worldnet Services
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Network: ATTSVC-12-84-0-0
CIDR: 12.84.0.0/15
IP Range: 12.84.0.0 - 12.85.255.255
Block size: 131,072
United States AT&T Worldnet Services
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Network: ATTSVC-12-92-0-0
CIDR: 12.92.0.0/15
IP Range: 12.92.0.0 - 12.93.255.255
Block size: 131,072
United States AT&T Worldnet Services
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Network: ATTSVI-12-122-0-0
CIDR: 12.122.0.0/15
IP Range: 12.122.0.0 - 12.123.255.255
Block size: 131,072
United States AT&T Worldnet Services
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Network: ATTSVC-12-74-0-0
CIDR: 12.74.0.0/16
IP Range: 12.74.0.0 - 12.74.255.255
Block size: 65,536
United States AT&T Worldnet Services
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Network: ATTSVC-12-75-0-0
CIDR: 12.75.0.0/16
IP Range: 12.75.0.0 - 12.75.255.255
Block size: 65,536
United States AT&T Worldnet Services
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Network: ATTSVI-12-120-0-0
CIDR: 12.120.0.0/16
IP Range: 12.120.0.0 - 12.120.255.255
Block size: 65,536
United States AT&T Worldnet Services
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Network: ATTSVC-12-194-0-0
CIDR: 12.194.0.0/17
IP Range: 12.194.0.0 - 12.194.127.255
Block size: 32,768
United States AT&T Worldnet Services
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Network: ATTSVCV-207-116-128-0
CIDR: 207.116.128.0/17
IP Range: 207.116.128.0 - 207.116.255.255
Block size: 32,768
United States AT&T Worldnet Services
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Network: ATTSVC-207-146-0-0
CIDR: 207.146.0.0/17
IP Range: 207.146.0.0 - 207.146.127.255
Block size: 32,768
United States AT&T Worldnet Services
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Network: ATTSVI-12-121-96-0
CIDR: N/A
IP Range: 12.121.96.0 - 12.121.191.255
Block size: 24,576
United States AT&T Worldnet Services
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Network: ATTSVI-12-121-192-0
CIDR: 12.121.192.0/18
IP Range: 12.121.192.0 - 12.121.255.255
Block size: 16,384
United States AT&T Worldnet Services
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Network: ATTSVC-12-194-128-0
CIDR: 12.194.128.0/18
IP Range: 12.194.128.0 - 12.194.191.255
Block size: 16,384
United States AT&T Worldnet Services
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Network: ATTSVC-12-194-192-0
CIDR: 12.194.192.0/18
IP Range: 12.194.192.0 - 12.194.255.255
Block size: 16,384
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-69-0-0
CIDR: 199.69.0.0/18
IP Range: 199.69.0.0 - 199.69.63.255
Block size: 16,384
United States AT&T Worldnet Services
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Network: ATTSVCV-207-116-0-0
CIDR: 207.116.0.0/18
IP Range: 207.116.0.0 - 207.116.63.255
Block size: 16,384
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-32-0-CHICAGO
CIDR: 12.136.32.0/19
IP Range: 12.136.32.0 - 12.136.63.255
Block size: 8,192
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-70-160-0
CIDR: 199.70.160.0/19
IP Range: 199.70.160.0 - 199.70.191.255
Block size: 8,192
United States AT&T Worldnet Services
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Network: ATTSVI-12-124-124-0-1
CIDR: N/A
IP Range: 12.124.124.0 - 12.124.153.255
Block size: 7,680
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-69-64-0
CIDR: N/A
IP Range: 199.69.64.0 - 199.69.93.255
Block size: 7,680
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-69-128-0
CIDR: N/A
IP Range: 199.69.128.0 - 199.69.157.255
Block size: 7,680
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-70-28-0
CIDR: N/A
IP Range: 199.70.28.0 - 199.70.57.255
Block size: 7,680
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-70-128-0
CIDR: N/A
IP Range: 199.70.128.0 - 199.70.157.255
Block size: 7,680
United States AT&T Worldnet Services
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Network: ATTSVC-207-147-32-0
CIDR: N/A
IP Range: 207.147.32.0 - 207.147.61.255
Block size: 7,680
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-69-160-0
CIDR: N/A
IP Range: 199.69.160.0 - 199.69.188.255
Block size: 7,424
United States AT&T Worldnet Services
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Network: ATTSVI-12-124-96-0-1
CIDR: N/A
IP Range: 12.124.96.0 - 12.124.123.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-12-195-228-0
CIDR: N/A
IP Range: 12.195.228.0 - 12.195.255.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-69-192-0
CIDR: N/A
IP Range: 199.69.192.0 - 199.69.219.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-70-0-0
CIDR: N/A
IP Range: 199.70.0.0 - 199.70.27.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-70-58-0
CIDR: N/A
IP Range: 199.70.58.0 - 199.70.85.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-207-146-128-0
CIDR: N/A
IP Range: 207.146.128.0 - 207.146.155.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-207-146-200-0
CIDR: N/A
IP Range: 207.146.200.0 - 207.146.227.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-207-146-228-0
CIDR: N/A
IP Range: 207.146.228.0 - 207.146.255.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-207-147-0-0
CIDR: N/A
IP Range: 207.147.0.0 - 207.147.27.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-207-147-80-0
CIDR: N/A
IP Range: 207.147.80.0 - 207.147.107.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVC-207-147-130-0
CIDR: N/A
IP Range: 207.147.130.0 - 207.147.157.255
Block size: 7,168
United States AT&T Worldnet Services
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Network: ATTSVI-12-126-77-0-1
CIDR: N/A
IP Range: 12.126.77.0 - 12.126.103.255
Block size: 6,912
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-70-86-0
CIDR: N/A
IP Range: 199.70.86.0 - 199.70.111.255
Block size: 6,656
United States AT&T Worldnet Services
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Network: ATTSVC-12-195-204-0
CIDR: N/A
IP Range: 12.195.204.0 - 12.195.227.255
Block size: 6,144
United States AT&T Worldnet Services
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Network: ATTSVC-207-146-176-0
CIDR: N/A
IP Range: 207.146.176.0 - 207.146.199.255
Block size: 6,144
United States AT&T Worldnet Services
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Network: ATTSVCDA-199-69-220-0
CIDR: N/A
IP Range: 199.69.220.0 - 199.69.239.255
Block size: 5,120
United States AT&T Worldnet Services
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Network: ATTSVC-207-146-156-0
CIDR: N/A
IP Range: 207.146.156.0 - 207.146.175.255
Block size: 5,120
United States AT&T Worldnet Services
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Network: ATTSVC-207-147-108-0
CIDR: N/A
IP Range: 207.147.108.0 - 207.147.127.255
Block size: 5,120
United States AT&T Worldnet Services
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Network: ATTSVI-12-126-240-0-1
CIDR: 12.126.240.0/20
IP Range: 12.126.240.0 - 12.126.255.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-96-0-NEW-YORK
CIDR: 12.134.96.0/20
IP Range: 12.134.96.0 - 12.134.111.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-112-0-NEW-YORK
CIDR: 12.134.112.0/20
IP Range: 12.134.112.0 - 12.134.127.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-176-0-CHICAGO
CIDR: 12.134.176.0/20
IP Range: 12.134.176.0 - 12.134.191.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-192-0-LOS-ANGELES
CIDR: 12.134.192.0/20
IP Range: 12.134.192.0 - 12.134.207.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-208-0-ATLANTA
CIDR: 12.134.208.0/20
IP Range: 12.134.208.0 - 12.134.223.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-224-0-ATLANTA
CIDR: 12.134.224.0/20
IP Range: 12.134.224.0 - 12.134.239.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-134-240-0-LOS-ANGELES
CIDR: 12.134.240.0/20
IP Range: 12.134.240.0 - 12.134.255.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-135-0-0-ATLANTA
CIDR: 12.135.0.0/20
IP Range: 12.135.0.0 - 12.135.15.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-135-16-0-ATLANTA
CIDR: 12.135.16.0/20
IP Range: 12.135.16.0 - 12.135.31.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-135-112-0-DALLAS
CIDR: 12.135.112.0/20
IP Range: 12.135.112.0 - 12.135.127.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-135-240-0-NEW-YORK
CIDR: 12.135.240.0/20
IP Range: 12.135.240.0 - 12.135.255.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-0-0-CHICAGO
CIDR: 12.136.0.0/20
IP Range: 12.136.0.0 - 12.136.15.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-16-0-CHICAGO
CIDR: 12.136.16.0/20
IP Range: 12.136.16.0 - 12.136.31.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-64-0-LOS-ANGELES
CIDR: 12.136.64.0/20
IP Range: 12.136.64.0 - 12.136.79.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-96-0-LOS-ANGELES
CIDR: 12.136.96.0/20
IP Range: 12.136.96.0 - 12.136.111.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-112-0-LOS-ANGELES
CIDR: 12.136.112.0/20
IP Range: 12.136.112.0 - 12.136.127.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-128-0-CHICAGO
CIDR: 12.136.128.0/20
IP Range: 12.136.128.0 - 12.136.143.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-144-0-CHICAGO
CIDR: 12.136.144.0/20
IP Range: 12.136.144.0 - 12.136.159.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-160-0-CHICAGO
CIDR: 12.136.160.0/20
IP Range: 12.136.160.0 - 12.136.175.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-176-0-CHICAGO
CIDR: 12.136.176.0/20
IP Range: 12.136.176.0 - 12.136.191.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-192-0-ATLANTA
CIDR: 12.136.192.0/20
IP Range: 12.136.192.0 - 12.136.207.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-208-0-ATLANTA
CIDR: 12.136.208.0/20
IP Range: 12.136.208.0 - 12.136.223.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-224-0-ATLANTA
CIDR: 12.136.224.0/20
IP Range: 12.136.224.0 - 12.136.239.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-136-240-0-ATLANTA
CIDR: 12.136.240.0/20
IP Range: 12.136.240.0 - 12.136.255.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-0-0-DALLAS
CIDR: 12.137.0.0/20
IP Range: 12.137.0.0 - 12.137.15.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-16-0-DALLAS
CIDR: 12.137.16.0/20
IP Range: 12.137.16.0 - 12.137.31.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-32-0-DALLAS
CIDR: 12.137.32.0/20
IP Range: 12.137.32.0 - 12.137.47.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-48-0-DALLAS
CIDR: 12.137.48.0/20
IP Range: 12.137.48.0 - 12.137.63.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-64-0-NEW-YORK
CIDR: 12.137.64.0/20
IP Range: 12.137.64.0 - 12.137.79.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-80-0-NEW-YORK
CIDR: 12.137.80.0/20
IP Range: 12.137.80.0 - 12.137.95.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-96-0-NEW-YORK
CIDR: 12.137.96.0/20
IP Range: 12.137.96.0 - 12.137.111.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-112-0-NEW-YORK
CIDR: 12.137.112.0/20
IP Range: 12.137.112.0 - 12.137.127.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-144-0-LOS-ANGELES
CIDR: 12.137.144.0/20
IP Range: 12.137.144.0 - 12.137.159.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-160-0-LOS-ANGELES
CIDR: 12.137.160.0/20
IP Range: 12.137.160.0 - 12.137.175.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-176-0-LOS-ANGELES
CIDR: 12.137.176.0/20
IP Range: 12.137.176.0 - 12.137.191.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-192-0-CHICAGO
CIDR: 12.137.192.0/20
IP Range: 12.137.192.0 - 12.137.207.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-208-0-CHICAGO
CIDR: 12.137.208.0/20
IP Range: 12.137.208.0 - 12.137.223.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-224-0-CHICAGO
CIDR: 12.137.224.0/20
IP Range: 12.137.224.0 - 12.137.239.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-137-240-0-CHICAGO
CIDR: 12.137.240.0/20
IP Range: 12.137.240.0 - 12.137.255.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-0-0-LOS-ANGELES
CIDR: 12.140.0.0/20
IP Range: 12.140.0.0 - 12.140.15.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-16-0-LOS-ANGELES
CIDR: 12.140.16.0/20
IP Range: 12.140.16.0 - 12.140.31.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-32-0-NEW-YORK
CIDR: 12.140.32.0/20
IP Range: 12.140.32.0 - 12.140.47.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-48-0-NEW-YORK
CIDR: 12.140.48.0/20
IP Range: 12.140.48.0 - 12.140.63.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-64-0-ATLANTA
CIDR: 12.140.64.0/20
IP Range: 12.140.64.0 - 12.140.79.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-80-0-ATLANTA
CIDR: 12.140.80.0/20
IP Range: 12.140.80.0 - 12.140.95.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-96-0-CHICAGO
CIDR: 12.140.96.0/20
IP Range: 12.140.96.0 - 12.140.111.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-112-0-CHICAGO
CIDR: 12.140.112.0/20
IP Range: 12.140.112.0 - 12.140.127.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-128-0-LOS-ANGELES
CIDR: 12.140.128.0/20
IP Range: 12.140.128.0 - 12.140.143.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-144-0-LOS-ANGELES
CIDR: 12.140.144.0/20
IP Range: 12.140.144.0 - 12.140.159.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-160-0-LOS-ANGELES
CIDR: 12.140.160.0/20
IP Range: 12.140.160.0 - 12.140.175.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-176-0-LOS-ANGELES
CIDR: 12.140.176.0/20
IP Range: 12.140.176.0 - 12.140.191.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-192-0-ATLANTA
CIDR: 12.140.192.0/20
IP Range: 12.140.192.0 - 12.140.207.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-208-0-ATLANTA
CIDR: 12.140.208.0/20
IP Range: 12.140.208.0 - 12.140.223.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-224-0-NEW-YORK
CIDR: 12.140.224.0/20
IP Range: 12.140.224.0 - 12.140.239.255
Block size: 4,096
United States AT&T Worldnet Services
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Network: ATTSVC-12-140-240-0-NEW-YORK
CIDR: 12.140.240.0/20
IP Range: 12.140.240.0 - 12.140.255.255
Block size: 4,096
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