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Data as of Nov 3, 2026

199.237.16.0/20

Anonymizer · ISP proxy

RCN · space held by NTT America, Inc.

Announcement
this exact prefix
RPKI valid
Announced by
AS6079
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
NTT America, Inc.
record created Apr 18, 1994
2 · Leased from
Rackdog
for its owner NTT America, Inc.
3 · Announced by
AS6079 RCN
since Dec 2025 · 11 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 199.237.16.0/20/24s
Rackdog
4,096100%
16
Leased from

Owners leasing their own space

NameIn 199.237.16.0/20/24s
NTT America, Inc.
4,096100%
16

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

199.237.16.0/20

From the registry to its use

  1. Apr 18, 1994
    Registry record
    NTT America, Inc.
    Direct Allocation (legacy, pre-1997)
    199.236.0.0/14
  2. May 9, 2005– Jun 27, 2016
    Announced
    AS2914 NTT America, Inc.
    as part of 199.236.0.0/14
    199.236.0.0/14
  3. Oct 2, 2016– Nov 2, 2026
    Announced
    AS2914 NTT America, Inc.
    as part of 199.236.0.0/14
    199.236.0.0/14
  4. Dec 2, 2025– Nov 2, 2026
    Announced
    AS6079 RCN
    Internet provider
  5. Dec 9, 2025
    Route object
    Rackdog
    RADB route object for AS6079 RCN, maintainer MAINT-AS398465
  6. May 19, 2026
    Assigned
    RCN
    Reassigned
    199.237.0.0/18
  7. today
    Leased from
    Rackdog
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeAnonymizer addressesOperatorLeased fromProxy exitsHolderRPKI
199.236.0.0/14
since Oct 2016
AS2914Internet provider5,6322.1%ISP proxyProxy providerssold by NovadaIP broker ARISK (part)9NTT America, Inc.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
199.236.0.0/14262,144NTTA-199-236NTT America, Inc. (NTTAM-1) · USDirect AllocationApr 18, 1994[email protected]
└ 199.237.0.0/1816,384RCN-199-237RCN (C11598223) · USReassignedMay 19, 2026[email protected]
via NTTA-199-236

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
NTT America, Inc.
Handle
NTTAM-1
Range
199.236.0.0/14
Registration type
Direct Allocation
Record created
Apr 18, 1994
Legacy
yes
Origin network

AS6079

US
Name
RCN
Type
Internet provider
Registered
Apr 4, 2001
Domain
astound.com
Website
www.astound.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed