Skip to content
InternetData
65,536 routable16 ASes
/16 subnet

66.37.0.0/16

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
2
countries
16
announcing ASes
40
announced prefixes
569
anonymous addresses

Where it is

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

  1. United States65,520 · 99.98%
  2. Canada16 · 0.02%

Who announces it

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

  1. AS3561CenturyLink Communications, LLC8,192 · 12.50%
  2. AS11427Charter Communications Inc8,192 · 12.50%
  3. AS16942Citizens Telephone Cooperative8,192 · 12.50%
  4. AS19237Quantum Names LLC8,192 · 12.50%
  5. AS22773Cox Communications Inc.8,192 · 12.50%
  6. AS13333Fidium4,096 · 6.25%
  7. AS46887Zayo Bandwidth3,328 · 5.08%
  8. AS16992FIRST LINK TECHNOLOGY, INC.2,816 · 4.30%
  9. AS20260Sawtel, Inc2,304 · 3.52%
  10. AS11713Granite Block Global Data Center, Inc256 · 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.

40 prefixes
PREFIXORIGINCOUNTRYRPKIPEERSFIRST SEEN
66.37.0.0/19AS19237Quantum Names LLCUnited StatesNot found12026-10-29
66.37.32.0/20AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.32.0/23AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.34.0/23AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.36.0/24AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.37.0/24AS35966AEW Capital Management LPUnited StatesNot found172026-10-02
66.37.38.0/24AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.40.0/23AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.42.0/24AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.43.0/24AS46887Zayo BandwidthUnited StatesNot found172026-10-02
66.37.46.0/24AS33435City of Springfield, MassachusettsUnited StatesNot found172026-10-02
66.37.47.0/24AS11713Granite Block Global Data Center, IncUnited StatesNot found172026-10-02
66.37.48.0/20AS13333FidiumUnited StatesNot found172026-10-02
66.37.64.0/19AS16942Citizens Telephone CooperativeUnited StatesValid182026-10-02
66.37.96.0/24AS36351IBM CloudUnited StatesNot found172026-10-02
66.37.98.0/23AS20260Sawtel, IncUnited StatesNot found182026-10-02
66.37.100.0/24AS37030Airtel Ghana LimitedUnited StatesNot found172026-10-02
66.37.103.0/24AS20260Sawtel, IncUnited StatesNot found182026-10-02
66.37.104.0/23AS20260Sawtel, IncUnited StatesNot found182026-10-02
66.37.106.0/23AS20260Sawtel, IncUnited StatesNot found182026-10-02
66.37.109.0/24AS20260Sawtel, IncUnited StatesNot found182026-10-02
66.37.110.0/24AS20260Sawtel, IncUnited StatesNot found182026-10-02
66.37.111.0/24AS206283Star Satellite Communications Company - PJSCUnited StatesValid172026-10-02
66.37.128.0/24AS16509Amazon.com, Inc.United StatesValid172026-10-02
66.37.129.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.130.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.131.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.132.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.140.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.141.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.142.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.143.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.145.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.155.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.157.0/24AS16992FIRST LINK TECHNOLOGY, INC.United StatesValid182026-10-02
66.37.160.0/19AS11427Charter Communications IncUnited StatesValid182026-10-02
66.37.192.0/19AS3561CenturyLink Communications, LLCUnited StatesNot found172026-10-02
66.37.224.0/19AS22773Cox Communications Inc.United StatesValid172026-10-02
66.37.228.0/23AS22773Cox Communications Inc.United StatesValid172026-10-02
66.37.230.0/23AS22773Cox Communications Inc.United StatesValid172026-10-02

Every /24 inside it

66.37.0.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.1.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.2.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.3.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.4.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.5.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.6.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.7.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.8.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.9.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.10.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.11.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.12.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.13.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.14.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.15.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.16.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.17.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.18.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.19.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.20.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.21.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.22.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.23.0/24United StatesAS19237Quantum Names LLC0256100.00%
66.37.24.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.25.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.26.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.27.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.28.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.29.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.30.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.31.0/24United StatesAS19237Quantum Names LLC000.00%
66.37.32.0/24United StatesAS46887Zayo Bandwidth401.56%
66.37.33.0/24United StatesAS46887Zayo Bandwidth200.78%
66.37.34.0/24United StatesAS46887Zayo Bandwidth301.17%
66.37.35.0/24United StatesAS46887Zayo Bandwidth803.13%
66.37.36.0/24United StatesAS46887Zayo Bandwidth903.52%
66.37.37.0/24United StatesAS35966AEW Capital Management LP100.39%
66.37.38.0/24United StatesAS46887Zayo Bandwidth401.56%
66.37.39.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.40.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.41.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.42.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.43.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.44.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.45.0/24United StatesAS46887Zayo Bandwidth000.00%
66.37.46.0/24United StatesAS33435City of Springfield, Massachusetts401.56%
66.37.47.0/24United StatesAS11713Granite Block Global Data Center, Inc3256100.00%
66.37.48.0/24United StatesAS13333Fidium200.78%
66.37.49.0/24United StatesAS13333Fidium200.78%
66.37.50.0/24United StatesAS13333Fidium702.73%
66.37.51.0/24United StatesAS13333Fidium803.13%
66.37.52.0/24United StatesAS13333Fidium100.39%
66.37.53.0/24United StatesAS13333Fidium1204.69%
66.37.54.0/24United StatesAS13333Fidium602.34%
66.37.55.0/24United StatesAS13333Fidium1003.91%
66.37.56.0/24United StatesAS13333Fidium702.73%
66.37.57.0/24United StatesAS13333Fidium000.00%
66.37.58.0/24United StatesAS13333Fidium501.95%
66.37.59.0/24United StatesAS13333Fidium602.34%
66.37.60.0/24United StatesAS13333Fidium1104.30%
66.37.61.0/24United StatesAS13333Fidium200.78%
66.37.62.0/24United StatesAS13333Fidium000.00%
66.37.63.0/24United StatesAS13333Fidium100.39%
66.37.64.0/24United StatesAS16942Citizens Telephone Cooperative1405.47%
66.37.65.0/24United StatesAS16942Citizens Telephone Cooperative501.95%
66.37.66.0/24United StatesAS16942Citizens Telephone Cooperative1104.30%
66.37.67.0/24United StatesAS16942Citizens Telephone Cooperative1505.86%
66.37.68.0/24United StatesAS16942Citizens Telephone Cooperative602.34%
66.37.69.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.70.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.71.0/24United StatesAS16942Citizens Telephone Cooperative33012.89%
66.37.72.0/24United StatesAS16942Citizens Telephone Cooperative501.95%
66.37.73.0/24United StatesAS16942Citizens Telephone Cooperative501.95%
66.37.74.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.75.0/24United StatesAS16942Citizens Telephone Cooperative301.17%
66.37.76.0/24United StatesAS16942Citizens Telephone Cooperative401.56%
66.37.77.0/24United StatesAS16942Citizens Telephone Cooperative401.56%
66.37.78.0/24United StatesAS16942Citizens Telephone Cooperative301.17%
66.37.79.0/24United StatesAS16942Citizens Telephone Cooperative602.34%
66.37.80.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.81.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.82.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.83.0/24United StatesAS16942Citizens Telephone Cooperative000.00%
66.37.84.0/24United StatesAS16942Citizens Telephone Cooperative200.78%
66.37.85.0/24United StatesAS16942Citizens Telephone Cooperative100.39%
66.37.86.0/24United StatesAS16942Citizens Telephone Cooperative401.56%
66.37.87.0/24United StatesAS16942Citizens Telephone Cooperative200.78%
66.37.88.0/24United StatesAS16942Citizens Telephone Cooperative301.17%
66.37.89.0/24United StatesAS16942Citizens Telephone Cooperative501.95%
66.37.90.0/24United StatesAS16942Citizens Telephone Cooperative301.17%
66.37.91.0/24United StatesAS16942Citizens Telephone Cooperative200.78%
66.37.92.0/24United StatesAS16942Citizens Telephone Cooperative100.39%
66.37.93.0/24United StatesAS16942Citizens Telephone Cooperative100.39%
66.37.94.0/24United StatesAS16942Citizens Telephone Cooperative100.39%
66.37.95.0/24United StatesAS16942Citizens Telephone Cooperative200.78%
66.37.96.0/24United StatesAS36351IBM Cloud0256100.00%
66.37.97.0/24United States—000.00%
66.37.98.0/24United StatesAS20260Sawtel, Inc100.39%
66.37.99.0/24United StatesAS20260Sawtel, Inc000.00%
66.37.100.0/24United StatesAS37030Airtel Ghana Limited100.39%
66.37.101.0/24United States—000.00%
66.37.102.0/24United States—000.00%
66.37.103.0/24United StatesAS20260Sawtel, Inc200.78%
66.37.104.0/24United StatesAS20260Sawtel, Inc000.00%
66.37.105.0/24United StatesAS20260Sawtel, Inc000.00%
66.37.106.0/24United StatesAS20260Sawtel, Inc000.00%
66.37.107.0/24United StatesAS20260Sawtel, Inc000.00%
66.37.108.0/24United States—000.00%
66.37.109.0/24United StatesAS20260Sawtel, Inc301.17%
66.37.110.0/24United StatesAS20260Sawtel, Inc702.73%
66.37.111.0/24United StatesAS206283Star Satellite Communications Company - PJSC000.00%
66.37.112.0/24United States—000.00%
66.37.113.0/24United States—000.00%
66.37.114.0/24United States—000.00%
66.37.115.0/24United States—000.00%
66.37.116.0/24United States—000.00%
66.37.117.0/24United States—000.00%
66.37.118.0/24United States—000.00%
66.37.119.0/24United States—000.00%
66.37.120.0/24United States—000.00%
66.37.121.0/24United States—000.00%
66.37.122.0/24United States—000.00%
66.37.123.0/24United States—000.00%
66.37.124.0/24United States—000.00%
66.37.125.0/24United States—000.00%
66.37.126.0/24United States—000.00%
66.37.127.0/24United States—000.00%
66.37.128.0/24United StatesAS16509Amazon.com, Inc.0256100.00%
66.37.129.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.025499.22%
66.37.130.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.025298.44%
66.37.131.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.000.00%
66.37.132.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.000.00%
66.37.133.0/24United States—000.00%
66.37.134.0/24United States—000.00%
66.37.135.0/24United States—000.00%
66.37.136.0/24United States—000.00%
66.37.137.0/24United States—000.00%
66.37.138.0/24United States—000.00%
66.37.139.0/24United States—000.00%
66.37.140.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.0256100.00%
66.37.141.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.0256100.00%
66.37.142.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.0256100.00%
66.37.143.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.000.00%
66.37.144.0/24United States—0256100.00%
66.37.145.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.000.00%
66.37.146.0/24United States—000.00%
66.37.147.0/24United States—000.00%
66.37.148.0/24United States—000.00%
66.37.149.0/24United States—000.00%
66.37.150.0/24United States—0256100.00%
66.37.151.0/24United States—000.00%
66.37.152.0/24United States—000.00%
66.37.153.0/24United States—000.00%
66.37.154.0/24United States—0256100.00%
66.37.155.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.000.00%
66.37.156.0/24United States—0256100.00%
66.37.157.0/24United StatesAS16992FIRST LINK TECHNOLOGY, INC.0256100.00%
66.37.158.0/24United States—000.00%
66.37.159.0/24United States—000.00%
66.37.160.0/24United StatesAS11427Charter Communications Inc200.78%
66.37.161.0/24United StatesAS11427Charter Communications Inc602.34%
66.37.162.0/24United StatesAS11427Charter Communications Inc100.39%
66.37.163.0/24United StatesAS11427Charter Communications Inc702.73%
66.37.164.0/24United StatesAS11427Charter Communications Inc602.34%
66.37.165.0/24United StatesAS11427Charter Communications Inc301.17%
66.37.166.0/24United StatesAS11427Charter Communications Inc401.56%
66.37.167.0/24United StatesAS11427Charter Communications Inc803.13%
66.37.168.0/24United StatesAS11427Charter Communications Inc501.95%
66.37.169.0/24United StatesAS11427Charter Communications Inc200.78%
66.37.170.0/24United StatesAS11427Charter Communications Inc401.56%
66.37.171.0/24United StatesAS11427Charter Communications Inc401.56%
66.37.172.0/24United StatesAS11427Charter Communications Inc501.95%
66.37.173.0/24United StatesAS11427Charter Communications Inc100.39%
66.37.174.0/24United StatesAS11427Charter Communications Inc200.78%
66.37.175.0/24United StatesAS11427Charter Communications Inc000.00%
66.37.176.0/24United StatesAS11427Charter Communications Inc803.13%
66.37.177.0/24United StatesAS11427Charter Communications Inc501.95%
66.37.178.0/24United StatesAS11427Charter Communications Inc301.17%
66.37.179.0/24United StatesAS11427Charter Communications Inc501.95%
66.37.180.0/24United StatesAS11427Charter Communications Inc602.34%
66.37.181.0/24United StatesAS11427Charter Communications Inc501.95%
66.37.182.0/24United StatesAS11427Charter Communications Inc200.78%
66.37.183.0/24United StatesAS11427Charter Communications Inc100.39%
66.37.184.0/24United StatesAS11427Charter Communications Inc100.39%
66.37.185.0/24United StatesAS11427Charter Communications Inc200.78%
66.37.186.0/24United StatesAS11427Charter Communications Inc501.95%
66.37.187.0/24United StatesAS11427Charter Communications Inc301.17%
66.37.188.0/24United StatesAS11427Charter Communications Inc100.39%
66.37.189.0/24United StatesAS11427Charter Communications Inc000.00%
66.37.190.0/24United StatesAS11427Charter Communications Inc000.00%
66.37.191.0/24United StatesAS11427Charter Communications Inc000.00%
66.37.192.0/24United StatesAS3561CenturyLink Communications, LLC0256100.00%
66.37.193.0/24United StatesAS3561CenturyLink Communications, LLC0256100.00%
66.37.194.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.195.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.196.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.197.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.198.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.199.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.200.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.201.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.202.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.203.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.204.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.205.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.206.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.207.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.208.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.209.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.210.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.211.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.212.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.213.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.214.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.215.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.216.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.217.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.218.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.219.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.220.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.221.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.222.0/24United StatesAS3561CenturyLink Communications, LLC000.00%
66.37.223.0/24United StatesAS3561CenturyLink Communications, LLC0256100.00%
66.37.224.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.225.0/24United StatesAS22773Cox Communications Inc.100.39%
66.37.226.0/24United StatesAS22773Cox Communications Inc.401.56%
66.37.227.0/24United StatesAS22773Cox Communications Inc.501.95%
66.37.228.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.229.0/24United StatesAS22773Cox Communications Inc.100.39%
66.37.230.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.231.0/24United StatesAS22773Cox Communications Inc.100.39%
66.37.232.0/24United StatesAS22773Cox Communications Inc.501.95%
66.37.233.0/24United StatesAS22773Cox Communications Inc.401.56%
66.37.234.0/24United StatesAS22773Cox Communications Inc.401.56%
66.37.235.0/24United StatesAS22773Cox Communications Inc.1505.86%
66.37.236.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.237.0/24United StatesAS22773Cox Communications Inc.602.34%
66.37.238.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.239.0/24United StatesAS22773Cox Communications Inc.602.34%
66.37.240.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.241.0/24United StatesAS22773Cox Communications Inc.1505.86%
66.37.242.0/24United StatesAS22773Cox Communications Inc.1204.69%
66.37.243.0/24United StatesAS22773Cox Communications Inc.1405.47%
66.37.244.0/24United StatesAS22773Cox Communications Inc.1003.91%
66.37.245.0/24United StatesAS22773Cox Communications Inc.000.00%
66.37.246.0/24United StatesAS22773Cox Communications Inc.1305.08%
66.37.247.0/24United StatesAS22773Cox Communications Inc.602.34%
66.37.248.0/24United StatesAS22773Cox Communications Inc.100.39%
66.37.249.0/24United StatesAS22773Cox Communications Inc.602.34%
66.37.250.0/24United StatesAS22773Cox Communications Inc.602.34%
66.37.251.0/24United StatesAS22773Cox Communications Inc.200.78%
66.37.252.0/24United StatesAS22773Cox Communications Inc.1405.47%
66.37.253.0/24United StatesAS22773Cox Communications Inc.702.73%
66.37.254.0/24United StatesAS22773Cox Communications Inc.1104.30%
66.37.255.0/24United StatesAS22773Cox Communications Inc.2007.81%
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.