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ASN lookup result for AS20057 AT&T Enterprises, LLC — network size, BGP routing and registration

USAS20057AT&T Enterprises, LLCISP
WHOIS Topology

United States · ARINatt.com

Home broadbandMobile network

IPv4 addresses

4,051,200

1,471 announced prefixes

IPv6 addresses

5.75 × 10²⁸

161 announced prefixes

BGP neighbours

…

CAIDA rank

#7,897

Customer cone 2 ASNs

Estimated users

634K

APNIC Labs estimate

RPKI

89% valid

22 invalid · 163 not covered

Average purity

89

107 sampled IPs

IXPs / facilities

0 / 0

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

Loading routing history…

IP ranges

Currently announced prefixes with their RIR registration and geolocation.

PrefixRPKIRegistrationGeolocationAddresses
166.128.0.0/14Valid—USUnited States262,144
166.132.0.0/14Valid—USUnited States262,144
107.84.0.0/15Valid—USUnited States131,072
166.134.0.0/15Valid—USUnited States131,072
166.184.0.0/15Valid—USUnited States131,072
166.212.0.0/15Valid—USUnited States131,072
166.218.0.0/15Valid—USUnited States131,072
107.80.0.0/16Valid—USUnited States65,536
107.232.0.0/16Invalid—USUnited States65,536
107.233.0.0/16Valid—USUnited States65,536
107.234.0.0/16Valid—USUnited States65,536
107.235.0.0/16Valid—USUnited States65,536
108.146.0.0/16Valid—USColby65,536
166.128.0.0/16Valid—USUnited States65,536
166.129.0.0/16Valid—USUnited States65,536
166.131.0.0/16Valid—USWest Frankfort65,536
166.136.0.0/16Valid—USUnited States65,536
166.137.0.0/16Valid—USUnited States65,536
166.170.0.0/16Valid—USAkron65,536
166.184.0.0/16Valid—USUnited States65,536

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 63 / 15,825 （<1%） · flagged 15

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

166.137.0.0/1610/256 with data · 1 flagged

107.84.0.0/153/512 with data · 3 flagged

166.170.0.0/162/256 with data · 0 flagged

166.186.0.0/162/256 with data · 2 flagged

108.144.128.0/172/128 with data · 1 flagged

166.128.0.0/141/1024 with data · 1 flagged

166.203.0.0/161/256 with data · 1 flagged

166.215.0.0/161/256 with data · 1 flagged

12.72.128.0/171/128 with data · 0 flagged

107.89.0.0/171/128 with data · 1 flagged

107.91.0.0/171/128 with data · 1 flagged

155.166.0.0/171/128 with data · 1 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 9270–84 1350–69 20–49 0

<0.01%

Share of IPv4 reported or blocklisted

142

Listed IPs

107

Analysed IPs

Riskiest /24 blocks

/24 blockFlaggedAnalysed
107.91.88.0/2424

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

  • US United States
Scope
Single country
In registered country
100.0%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS20057 · Last 7 days
Bot vs. Human
Human 87.3%Bot 12.7%
Human87.3%Bot12.7%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks
GET
64.8%HEAD
23.0%POST
11.8%PATCH
0.4%OPTIONS
0.1%Other
< 0.1%

BGP Announcements

Hourly BGP route announcements over the last 7 days

5,502,477
7-day total
285,844
Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

A pronounced day/night rhythm, typical of networks with human users.

00061218
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Times in UTCLessMore
Peak hour
19:00–20:00
Active hours
16 hrs
Weekend vs weekday
Weekdays heavier
Busiest day
Fri

Datacenter Presence

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BGP upstreams and neighbours

AS20057Standalone page
Loading upstreams and neighbours…

WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

InformationSourceUpdated
Registered countryRIR daily delegation statistics2026-10-22
Registered address & allocation dateRIR registration data (RDAP)2026-10-08
Organization & company countryAS-to-organization data2026-10-21
Network typeCleanIP ASN canon2026-10-21
Announced prefixes & BGP neighboursPublic BGP routing data2026-10-22
IPv4 geographyGeolocation database—
RPKI validationRPKI ROA validation data2026-10-22
Rank & customer coneCAIDA AS Rank2026-10-01
Estimated users (APNIC)APNIC Labs user estimates2026-10-19
Network tagsPublic routing data community tags2026-10-22
IP reputationCleanIP lookups and neighbour sampling—

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Multi-source cross-checks · In-house reputation data · Real data only

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