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Autonoom Systeem

AS19957

AT&T Enterprises, LLC

Aangekondigde IPs
291,072
CIDR-prefixes
26
ASN
AS19957

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Isp allocation +5
  • Trust score 70 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

About AT&T

AT&T Inc., an abbreviation of its predecessor's original name, the American Telephone and Telegraph Company, is an American multinational telecommunications company headquartered at the Whitacre Tower in Downtown Dallas, Texas. AT&T is the world's third-largest telecommunications company by revenue, the third-largest wireless carrier in the United States behind T-Mobile and Verizon, and the nation's largest fiber internet provider.

Founded
1983
Headquarters
San Antonio
Industry
telecommunications industry
Employees
273,000

Top CIDR-bereiken

CIDRIPsPTR DensityOrganisatieLandStateCity
66.4.0.0/16 65.5K
3.3%
AT&T Enterprises, LLC US Tennessee Mount Juliet
198.146.0.0/16 65.5K
0.1%
AT&T Enterprises, LLC US Tennessee Columbia
206.23.0.0/16 65.5K
0.1%
AT&T Enterprises, LLC US Tennessee Newbern
208.182.0.0/16 65.5K
1.2%
AT&T Enterprises, LLC US
12.204.208.0/20 4.1K
0.2%
AT&T Enterprises, LLC US Tennessee Antioch
70.158.144.0/20 4.1K
0.0%
AT&T Enterprises, LLC US
74.252.160.0/20 4.1K
0.0%
AT&T Enterprises, LLC US
208.63.128.0/20 4.1K
0.0%
AT&T Enterprises, LLC US
12.204.192.0/21 2.0K
0.1%
AT&T Enterprises, LLC US
68.156.24.0/21 2.0K
0.0%
AT&T Enterprises, LLC US Tennessee Morristown
70.150.248.0/21 2.0K
0.0%
AT&T Enterprises, LLC US
12.204.204.0/22 1.0K
0.5%
AT&T Enterprises, LLC US
74.254.176.0/22 1.0K
0.0%
AT&T Enterprises, LLC US
12.204.202.0/23 512
0.0%
AT&T Enterprises, LLC US
64.79.182.0/23 512
0.0%
AT&T Enterprises, LLC US
170.141.56.0/23 512
0.0%
AT&T Enterprises, LLC US
170.141.60.0/23 512
0.0%
AT&T Enterprises, LLC US
12.165.35.0/24 256
0.0%
AT&T Enterprises, LLC US
12.204.201.0/24 256
1.2%
AT&T Enterprises, LLC US
12.230.239.0/24 256
0.0%
AT&T Enterprises, LLC US
65.82.99.0/24 256
0.0%
AT&T Enterprises, LLC US
70.150.21.0/24 256
99.6%
AT&T Enterprises, LLC US South Carolina Spartanburg
70.150.247.0/24 256
99.6%
AT&T Enterprises, LLC US
72.158.184.0/24 256
0.0%
AT&T Enterprises, LLC US
72.159.76.0/24 256
0.0%
AT&T Enterprises, LLC US
74.254.180.0/24 256
0.0%
AT&T Enterprises, LLC US

BGP Aangekondigde Prefixes

Live BGP-anomalieën →

Prefixes AS19957 daadwerkelijk afkomstig uit BGP, waargenomen door onze RIPE RIS-collectoren. Deze live routingweergave kan afwijken van de bovenstaande registry-toewijzing.

PrefixAankondigingsvoorbeeldenLaatst gezien
66.4.27.0/24 28,434 2026-09-12 04:16:49
208.182.124.0/24 21,958 2026-09-12 04:17:05
66.4.60.0/23 16,500 2026-09-12 04:15:51
66.4.32.0/23 15,699 2026-09-12 04:12:14
66.4.19.0/24 14,676 2026-09-12 04:16:53
12.204.208.0/20 11,634 2026-09-12 04:15:55
66.4.81.0/24 11,518 2026-09-12 04:17:27
66.4.40.0/24 11,413 2026-09-12 04:17:27
66.4.18.0/24 11,402 2026-09-12 04:17:27
66.4.126.0/24 11,389 2026-09-12 04:17:27
66.4.78.0/24 11,388 2026-09-12 04:17:27
66.4.38.0/24 11,382 2026-09-12 04:17:27
66.4.16.0/23 11,372 2026-09-12 04:17:27
12.204.201.0/24 11,289 2026-09-12 04:15:51
68.156.28.0/23 11,192 2026-09-12 04:15:51
170.141.60.0/23 11,087 2026-09-12 04:17:35
12.204.192.0/20 10,288 2026-09-12 04:15:55
70.150.247.0/24 9,726 2026-09-12 04:17:35
208.63.128.0/20 9,624 2026-09-12 04:15:55
208.63.129.0/24 9,511 2026-09-12 04:15:55
12.204.206.0/24 8,691 2026-09-12 04:16:27
12.204.209.0/24 8,691 2026-09-12 04:16:27
12.204.208.0/24 8,649 2026-09-12 04:16:27
12.204.216.0/21 8,576 2026-09-12 04:16:27
66.4.0.0/16 8,518 2026-09-12 04:17:27
66.4.9.0/24 8,515 2026-09-12 04:17:27
66.4.124.0/24 8,513 2026-09-12 04:17:27
66.4.14.0/23 8,459 2026-09-12 04:17:27
66.4.28.0/22 8,445 2026-09-12 04:17:27
66.4.18.0/23 8,377 2026-09-12 04:17:27
66.4.8.0/23 8,360 2026-09-12 04:17:27
64.79.176.0/21 8,288 2026-09-12 04:17:26
170.141.56.0/23 8,264 2026-09-12 04:17:35
170.142.0.0/16 8,222 2026-09-12 04:17:20
170.143.0.0/16 8,190 2026-09-12 04:17:20
208.182.0.0/16 8,181 2026-09-12 04:17:20
208.182.101.0/24 8,178 2026-09-12 04:17:20
206.23.0.0/16 8,132 2026-09-12 04:17:20
198.146.0.0/16 8,110 2026-09-12 04:17:20
72.159.76.0/24 6,879 2026-09-12 04:17:37
72.158.184.0/24 6,853 2026-09-12 04:17:37
70.150.21.0/24 6,846 2026-09-12 04:17:36
208.63.128.0/24 6,622 2026-09-12 04:17:20
68.156.24.0/21 2,714 2026-09-12 04:16:28
68.156.24.0/23 2,711 2026-09-12 04:16:28
68.156.26.0/23 2,635 2026-09-12 04:12:14
12.230.239.0/24 1,237 2026-09-12 04:16:28
12.165.35.0/24 1,225 2026-09-12 04:16:28
65.82.99.0/24 1,225 2026-09-12 04:16:28
70.158.144.0/20 1,215 2026-09-12 04:16:28

Toon top 50 of 54 aangekondigde prefixes per steekproefvolume.

Frequently Asked Questions

Wat is AS19957?

AS19957 is een Autonomous System Number toegewezen aan AT&T Enterprises, LLC. Een ASN identificeert een netwerk dat een specifieke set IP-adressen beheert en bepaalt hoe verkeer over het internet wordt gerouteerd via BGP (Border Gateway Protocol).

Hoeveel IP-adressen kondigt AS19957 aan?

AS19957 kondigt 291.1K IPv4-adressen aan, verdeeld over 26 gerouteerde CIDR prefixes. Het netwerk is geregistreerd in United States.

Wie beheert AS19957?

AS19957 wordt beheerd door AT&T Enterprises, LLC. De organisatie is gevestigd in United States. U kunt alle IP-bereiken en gerelateerde ASNs bekijken op de organisatiepagina.

In welk land is AS19957 geregistreerd?

AS19957 is geregistreerd in United States. Dit geeft aan waar de netwerkoperator is gevestigd, hoewel de IP-adressen die het aankondigt wereldwijd gebruikers kunnen bedienen.

Laatst bijgewerkt: 2026-09-12 09:24:05 UTC
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