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Data as of Nov 4, 2026

12.158.148.0/24

1 residential-proxy exit · 30 days

Newton Healthcare Corporation · space held by AT&T Enterprises, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS400543
Type
Business
Risk
0 / 100 · Low

Residential-proxy exits

Proxy exits
1
0.39% of its addresses · 30 days
Providers
1
selling exits here
Oct 5, 2026 – Nov 3, 2026

Exits seen per day

2 observations

Proxy providers listing exits

  • ColaProxy

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromProxy exitsHolderRPKI
12.128.0.0/9AS7018ResidentialIP broker Rackdog (part)5,173
283 always on
AT&T Enterprises, LLC
12.0.0.0/8AS7018Residential13,297
724 always on
AT&T Enterprises, LLC

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
12.0.0.0/816,777,216ATTAT&T Enterprises, LLC (AEL-360) · USDirect AllocationAug 23, 1983abuse@att.net
└ 12.158.148.0/24256EM-3-NET216-148EM-3 Networks LLC-Newton Medi (C08178478) · USReassignedJan 28, 2022abuse@att.net
via ATT

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
AT&T Enterprises, LLC
Handle
AEL-360
Range
12.0.0.0/8
Registration type
Direct Allocation
Record created
Aug 23, 1983
Legacy
yes
Origin network

AS400543

US
Name
Newton Healthcare Corporation
Type
Business
Registered
Mar 18, 2022
Domain
mynmchealth.org
Industry
Health Care Services
Spamhaus ASN-DROP
not listed