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InternetData
65,536 routable34 ASes
/16 subnet

204.128.0.0/16

Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.

65,536
routable addresses
65,536
geolocated
1
country
34
announcing ASes
51
announced prefixes
47
anonymous addresses

Where it is

Addresses IP Geolocation places in each country, as a share of those it places.

  1. United States65,536 · 100.00%

Who announces it

Each /24 counted for the AS announcing most of it, as a share of the routable addresses.

top 25 of 34
  1. AS6461Zayo Bandwidth16,384 · 25.00%
  2. AS3356Level 3 Parent, LLC3,840 · 5.86%
  3. AS2381WiscNet2,304 · 3.52%
  4. AS8103Florida Department of Management Services - Division of Telecommunications2,048 · 3.13%
  5. AS40841MARKETAXESS HOLDINGS, INC.1,024 · 1.56%
  6. AS20235Mylan Pharmaceuticals Inc.768 · 1.17%
  7. AS209CenturyLink Communications, LLC256 · 0.39%
  8. AS600OARnet256 · 0.39%
  9. AS2386AT&T Enterprises, LLC256 · 0.39%
  10. AS3361Digital Fortress256 · 0.39%

What the databases see

Addresses each address-keyed database holds in this block, as a share of its routable addresses. Counts overlap: one address can be in several.

Announced prefixes

Every prefix inside this block that BGP Route saw announced, with its origin and RPKI status.

51 prefixes
PREFIXORIGINCOUNTRYRPKIPEERSFIRST SEEN
204.128.2.0/24AS20235Mylan Pharmaceuticals Inc.United StatesNot found172026-10-02
204.128.4.0/23AS20235Mylan Pharmaceuticals Inc.United StatesNot found172026-10-02
204.128.8.0/21AS8103Florida Department of Management Services - Division of TelecommunicationsUnited StatesNot found172026-10-02
204.128.16.0/20AS3356Level 3 Parent, LLCUnited StatesNot found172026-10-02
204.128.27.0/24AS209CenturyLink Communications, LLCUnited StatesNot found172026-10-02
204.128.28.0/23AS3356Level 3 Parent, LLCUnited StatesNot found172026-10-02
204.128.30.0/23AS3356Level 3 Parent, LLCUnited StatesNot found172026-10-02
204.128.52.0/22AS40841MARKETAXESS HOLDINGS, INC.United StatesNot found182026-10-02
204.128.52.0/24AS40841MARKETAXESS HOLDINGS, INC.United StatesNot found172026-10-02
204.128.53.0/24AS40841MARKETAXESS HOLDINGS, INC.United StatesNot found182026-10-02
204.128.54.0/24AS40841MARKETAXESS HOLDINGS, INC.United StatesNot found182026-10-02
204.128.55.0/24AS40841MARKETAXESS HOLDINGS, INC.United StatesNot found182026-10-02
204.128.64.0/19AS6461Zayo BandwidthUnited StatesNot found172026-10-02
204.128.96.0/19AS6461Zayo BandwidthUnited StatesNot found172026-10-02
204.128.96.0/24AS6461Zayo BandwidthUnited StatesNot found172026-10-02
204.128.128.0/24AS40292Cintas CorporationUnited StatesNot found172026-10-02
204.128.130.0/24AS394934Union Bank and Trust CompanyUnited StatesNot found182026-10-02
204.128.132.0/24AS397965Travis County, TexasUnited StatesNot found182026-10-02
204.128.133.0/24AS18530Isomedia, Inc.United StatesNot found172026-10-02
204.128.141.0/24AS40548Nokia of America CorporationUnited StatesNot found172026-10-02
204.128.144.0/24AS402663PhoenixNet-LabsUnited StatesValid172026-10-07
204.128.145.0/24AS26846Nazareth College of RochesterUnited StatesNot found172026-10-02
204.128.146.0/24AS21914RXO Corporate Solutions, LLCUnited StatesNot found172026-10-02
204.128.154.0/24AS12161dao Consulting, LLCUnited StatesNot found172026-10-02
204.128.170.0/24AS32526CatalystVM LLCUnited StatesValid182026-10-02
204.128.175.0/24AS14618Amazon.com, Inc.United StatesValid182026-10-02
204.128.182.0/24AS397263Techloq LimitedUnited StatesValid172026-10-02
204.128.187.0/24AS400366Freestyle Services LLCUnited StatesValid12026-10-02
204.128.188.0/24AS2386AT&T Enterprises, LLCUnited StatesNot found172026-10-02
204.128.192.0/24AS25932Disney Worldwide Services, Inc.United StatesNot found172026-10-02
204.128.198.0/24AS396299The IMAGINE Group, LLCUnited StatesNot found172026-10-02
204.128.204.0/24AS19776Mid-Pacific InstituteUnited StatesNot found182026-10-02
204.128.208.0/24AS11915TPx CommunicationsUnited StatesNot found172026-10-02
204.128.210.0/24AS30334The Park National CorporationUnited StatesNot found182026-10-02
204.128.217.0/24AS600OARnetUnited StatesNot found182026-10-02
204.128.220.0/24AS62642Bigleaf Networks, Inc.United StatesNot found172026-10-02
204.128.222.0/24AS11272C Spire FiberUnited StatesNot found172026-10-02
204.128.232.0/24AS11823Lord, Abbett & Co.United StatesNot found182026-10-02
204.128.233.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.234.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.235.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.236.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.237.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.238.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.240.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.241.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.242.0/24AS2381WiscNetUnited StatesNot found202026-10-02
204.128.243.0/24AS14034Swire Pacific Holdings Inc.United StatesNot found172026-10-02
204.128.249.0/24AS401803Peoria Park DistrictUnited StatesValid172026-10-02
204.128.250.0/24AS3361Digital FortressUnited StatesNot found172026-10-02
204.128.252.0/24AS15830Equinix (EMEA) Acquisition Enterprises B.V.United StatesNot found172026-10-02

Every /24 inside it

204.128.0.0/24United States—000.00%
204.128.1.0/24United States—000.00%
204.128.2.0/24United StatesAS20235Mylan Pharmaceuticals Inc.301.17%
204.128.3.0/24United States—000.00%
204.128.4.0/24United StatesAS20235Mylan Pharmaceuticals Inc.200.78%
204.128.5.0/24United StatesAS20235Mylan Pharmaceuticals Inc.200.78%
204.128.6.0/24United States—000.00%
204.128.7.0/24United States—000.00%
204.128.8.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.9.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.10.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.11.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.12.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.13.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.14.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.15.0/24United StatesAS8103Florida Department of Management Services - Division of Telecommunications000.00%
204.128.16.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.17.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.18.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.19.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.20.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.21.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.22.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.23.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.24.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.25.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.26.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.27.0/24United StatesAS209CenturyLink Communications, LLC000.00%
204.128.28.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.29.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.30.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.31.0/24United StatesAS3356Level 3 Parent, LLC000.00%
204.128.32.0/24United States—000.00%
204.128.33.0/24United States—000.00%
204.128.34.0/24United States—000.00%
204.128.35.0/24United States—000.00%
204.128.36.0/24United States—000.00%
204.128.37.0/24United States—000.00%
204.128.38.0/24United States—000.00%
204.128.39.0/24United States—000.00%
204.128.40.0/24United States—000.00%
204.128.41.0/24United States—000.00%
204.128.42.0/24United States—000.00%
204.128.43.0/24United States—000.00%
204.128.44.0/24United States—000.00%
204.128.45.0/24United States—000.00%
204.128.46.0/24United States—000.00%
204.128.47.0/24United States—000.00%
204.128.48.0/24United States—000.00%
204.128.49.0/24United States—000.00%
204.128.50.0/24United States—000.00%
204.128.51.0/24United States—000.00%
204.128.52.0/24United StatesAS40841MARKETAXESS HOLDINGS, INC.000.00%
204.128.53.0/24United StatesAS40841MARKETAXESS HOLDINGS, INC.000.00%
204.128.54.0/24United StatesAS40841MARKETAXESS HOLDINGS, INC.000.00%
204.128.55.0/24United StatesAS40841MARKETAXESS HOLDINGS, INC.000.00%
204.128.56.0/24United States—000.00%
204.128.57.0/24United States—000.00%
204.128.58.0/24United States—000.00%
204.128.59.0/24United States—000.00%
204.128.60.0/24United States—000.00%
204.128.61.0/24United States—000.00%
204.128.62.0/24United States—000.00%
204.128.63.0/24United States—000.00%
204.128.64.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.65.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.66.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.67.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.68.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.69.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.70.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.71.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.72.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.73.0/24United StatesAS6461Zayo Bandwidth200.78%
204.128.74.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.75.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.76.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.77.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.78.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.79.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.80.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.81.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.82.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.83.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.84.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.85.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.86.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.87.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.88.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.89.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.90.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.91.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.92.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.93.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.94.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.95.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.96.0/24United StatesAS6461Zayo Bandwidth100.39%
204.128.97.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.98.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.99.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.100.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.101.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.102.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.103.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.104.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.105.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.106.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.107.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.108.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.109.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.110.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.111.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.112.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.113.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.114.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.115.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.116.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.117.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.118.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.119.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.120.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.121.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.122.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.123.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.124.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.125.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.126.0/24United StatesAS6461Zayo Bandwidth000.00%
204.128.127.0/24United StatesAS6461Zayo Bandwidth100.39%
204.128.128.0/24United StatesAS40292Cintas Corporation000.00%
204.128.129.0/24United States—000.00%
204.128.130.0/24United StatesAS394934Union Bank and Trust Company1706.64%
204.128.131.0/24United States—000.00%
204.128.132.0/24United StatesAS397965Travis County, Texas000.00%
204.128.133.0/24United StatesAS18530Isomedia, Inc.000.00%
204.128.134.0/24United States—000.00%
204.128.135.0/24United States—000.00%
204.128.136.0/24United States—000.00%
204.128.137.0/24United States—000.00%
204.128.138.0/24United States—000.00%
204.128.139.0/24United States—000.00%
204.128.140.0/24United States—000.00%
204.128.141.0/24United StatesAS40548Nokia of America Corporation000.00%
204.128.142.0/24United States—000.00%
204.128.143.0/24United States—000.00%
204.128.144.0/24United StatesAS402663PhoenixNet-Labs000.00%
204.128.145.0/24United StatesAS26846Nazareth College of Rochester100.39%
204.128.146.0/24United StatesAS21914RXO Corporate Solutions, LLC000.00%
204.128.147.0/24United States—000.00%
204.128.148.0/24United States—000.00%
204.128.149.0/24United States—000.00%
204.128.150.0/24United States—000.00%
204.128.151.0/24United States—000.00%
204.128.152.0/24United States—000.00%
204.128.153.0/24United States—000.00%
204.128.154.0/24United StatesAS12161dao Consulting, LLC000.00%
204.128.155.0/24United States—000.00%
204.128.156.0/24United States—000.00%
204.128.157.0/24United States—000.00%
204.128.158.0/24United States—000.00%
204.128.159.0/24United States—000.00%
204.128.160.0/24United States—000.00%
204.128.161.0/24United States—000.00%
204.128.162.0/24United States—000.00%
204.128.163.0/24United States—000.00%
204.128.164.0/24United States—000.00%
204.128.165.0/24United States—000.00%
204.128.166.0/24United States—000.00%
204.128.167.0/24United States—000.00%
204.128.168.0/24United States—000.00%
204.128.169.0/24United States—000.00%
204.128.170.0/24United StatesAS32526CatalystVM LLC000.00%
204.128.171.0/24United States—000.00%
204.128.172.0/24United States—000.00%
204.128.173.0/24United States—000.00%
204.128.174.0/24United States—000.00%
204.128.175.0/24United StatesAS14618Amazon.com, Inc.0256100.00%
204.128.176.0/24United States—000.00%
204.128.177.0/24United States—000.00%
204.128.178.0/24United States—000.00%
204.128.179.0/24United States—000.00%
204.128.180.0/24United States—000.00%
204.128.181.0/24United States—000.00%
204.128.182.0/24United StatesAS397263Techloq Limited401.56%
204.128.183.0/24United States—000.00%
204.128.184.0/24United States—000.00%
204.128.185.0/24United States—000.00%
204.128.186.0/24United States—000.00%
204.128.187.0/24United StatesAS400366Freestyle Services LLC000.00%
204.128.188.0/24United StatesAS2386AT&T Enterprises, LLC000.00%
204.128.189.0/24United States—000.00%
204.128.190.0/24United States—000.00%
204.128.191.0/24United States—000.00%
204.128.192.0/24United StatesAS25932Disney Worldwide Services, Inc.501.95%
204.128.193.0/24United States—000.00%
204.128.194.0/24United States—000.00%
204.128.195.0/24United States—000.00%
204.128.196.0/24United States—000.00%
204.128.197.0/24United States—000.00%
204.128.198.0/24United StatesAS396299The IMAGINE Group, LLC000.00%
204.128.199.0/24United States—000.00%
204.128.200.0/24United States—000.00%
204.128.201.0/24United States—000.00%
204.128.202.0/24United States—000.00%
204.128.203.0/24United States—000.00%
204.128.204.0/24United StatesAS19776Mid-Pacific Institute100.39%
204.128.205.0/24United States—000.00%
204.128.206.0/24United States—000.00%
204.128.207.0/24United States—000.00%
204.128.208.0/24United StatesAS11915TPx Communications000.00%
204.128.209.0/24United States—000.00%
204.128.210.0/24United StatesAS30334The Park National Corporation000.00%
204.128.211.0/24United States—000.00%
204.128.212.0/24United States—000.00%
204.128.213.0/24United States—000.00%
204.128.214.0/24United States—000.00%
204.128.215.0/24United States—000.00%
204.128.216.0/24United States—000.00%
204.128.217.0/24United StatesAS600OARnet000.00%
204.128.218.0/24United States—000.00%
204.128.219.0/24United States—000.00%
204.128.220.0/24United StatesAS62642Bigleaf Networks, Inc.000.00%
204.128.221.0/24United States—000.00%
204.128.222.0/24United StatesAS11272C Spire Fiber000.00%
204.128.223.0/24United States—000.00%
204.128.224.0/24United States—000.00%
204.128.225.0/24United States—000.00%
204.128.226.0/24United States—000.00%
204.128.227.0/24United States—000.00%
204.128.228.0/24United States—000.00%
204.128.229.0/24United States—000.00%
204.128.230.0/24United States—000.00%
204.128.231.0/24United States—000.00%
204.128.232.0/24United StatesAS11823Lord, Abbett & Co.100.39%
204.128.233.0/24United StatesAS2381WiscNet000.00%
204.128.234.0/24United StatesAS2381WiscNet000.00%
204.128.235.0/24United StatesAS2381WiscNet000.00%
204.128.236.0/24United StatesAS2381WiscNet100.39%
204.128.237.0/24United StatesAS2381WiscNet100.39%
204.128.238.0/24United StatesAS2381WiscNet000.00%
204.128.239.0/24United States—000.00%
204.128.240.0/24United StatesAS2381WiscNet000.00%
204.128.241.0/24United StatesAS2381WiscNet000.00%
204.128.242.0/24United StatesAS2381WiscNet100.39%
204.128.243.0/24United StatesAS14034Swire Pacific Holdings Inc.301.17%
204.128.244.0/24United States—000.00%
204.128.245.0/24United States—000.00%
204.128.246.0/24United States—000.00%
204.128.247.0/24United States—000.00%
204.128.248.0/24United States—000.00%
204.128.249.0/24United StatesAS401803Peoria Park District000.00%
204.128.250.0/24United StatesAS3361Digital Fortress1256100.00%
204.128.251.0/24United States—000.00%
204.128.252.0/24United StatesAS15830Equinix (EMEA) Acquisition Enterprises B.V.0256100.00%
204.128.253.0/24United States—000.00%
204.128.254.0/24United States—000.00%
204.128.255.0/24United States—000.00%
00 · Evaluate

Test the real build first.

An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.

01 · License

Then license what you use.

Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell, priced by scope rather than by seat.
Annual terms, a named contact, and monthly, quarterly or yearly payment.