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Sistema Autónomo

AS203

Level 3 Parent, LLC

IPs anunciadas
307,712
Prefijos CIDR
104
ASN
AS203

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.

58/100
Caution
How this score is built
  • Baseline (neutral) 65
  • Active-threat / abuse risk −12
  • Isp allocation +5
  • Trust score 58 / 100

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

About Level 3 Communications

Level 3 Communications, Inc. was an American multinational telecommunications and internet service provider company headquartered in Broomfield, Colorado.

Founded
1985
Headquarters
Frankfurt
Industry
telecommunications industry

⚠ 24 Prefijo MOASes — múltiples ASNs de origen detectados

Todas las anomalías MOAS →

Un prefijo previamente estable originado por AS203 es ahora también anunciado por otro ASN (MOAS — Multiple-Origin AS), detectado por nuestros colectores RIPE RIS. A menudo es benigno (anycast, multi-homing o una transferencia reciente), pero puede indicar una fuga de ruta o un secuestro de prefijo, por lo que vale la pena investigarlo.

PrefijoASNs de origenÚltima detección (UTC)
156.93.228.0/24 AS203, AS10695 2026-09-10 14:40:46
216.33.160.0/24 AS203, AS3561, AS10753 2026-09-10 14:40:46
206.227.216.0/23 AS203, AS6109 2026-09-10 14:40:46
63.144.218.0/24 AS203, AS22587 2026-09-10 14:40:46
63.150.74.0/23 AS203, AS22587 2026-09-10 14:40:46
170.46.132.0/23 AS203, AS18697 2026-09-10 14:40:46
170.46.162.0/24 AS203, AS18697 2026-09-10 14:40:46
143.199.96.0/24 AS203, AS21680 2026-09-10 14:40:46
148.59.168.0/24 AS203, AS26845 2026-09-10 14:40:46
170.46.0.0/16 AS203, AS18697 2026-09-10 14:40:46
65.222.131.0/24 AS203, AS46909 2026-09-10 14:40:46
65.240.184.0/23 AS203, AS22587 2026-09-10 14:40:46
170.46.200.0/24 AS203, AS18697 2026-09-10 14:40:46
205.166.171.0/24 AS203, AS26845 2026-09-10 14:40:46
170.46.150.0/24 AS203, AS18697 2026-09-10 14:40:46

Mostrando los 15 más recientemente detectados de 24 prefijos MOAS. Muchos prefijos de origen múltiple en grandes redes son benignos (anycast); ver todas las anomalías MOAS.

Principales rangos CIDR

CIDRIPsPTR DensityOrganizaciónPaísStateCity
149.21.0.0/16 65.5K
0.0%
McKesson Corp. US
156.42.0.0/16 65.5K
0.4%
Level 3 Parent, LLC US Arizona Phoenix
170.46.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Vermont Rutland
143.112.0.0/17 32.8K
0.0%
McKesson Corp. US Virginia Woodbridge
156.42.128.0/17 32.8K
0.0%
Level 3 Parent, LLC US Arizona Phoenix
143.112.128.0/18 16.4K
0.0%
Level 3 Parent, LLC US Nevada Henderson
156.42.64.0/18 16.4K
0.0%
Level 3 Parent, LLC US Arizona Phoenix
156.42.128.0/18 16.4K
0.0%
Level 3 Parent, LLC US Arizona Phoenix
143.112.160.0/19 8.2K
0.0%
Level 3 Parent, LLC US
143.112.192.0/19 8.2K
0.0%
Level 3 Parent, LLC US
156.42.32.0/19 8.2K
0.0%
Level 3 Parent, LLC US Arizona Phoenix
156.42.224.0/19 8.2K
0.0%
Level 3 Parent, LLC US
161.209.192.0/19 8.2K
0.0%
Level 3 Parent, LLC US California Long Beach
143.112.144.0/20 4.1K
0.0%
Level 3 Parent, LLC US Nevada Henderson
143.112.224.0/20 4.1K
0.0%
Level 3 Parent, LLC US
161.209.96.0/20 4.1K
0.0%
Level 3 Parent, LLC US
206.203.96.0/20 4.1K
0.0%
McKesson Corp. US
216.163.240.0/20 4.1K
5.2%
Level 3 Parent, LLC US New Jersey Chatham
143.112.136.0/21 2.0K
0.0%
Level 3 Parent, LLC US
143.112.240.0/21 2.0K
0.0%
Level 3 Parent, LLC US
156.42.208.0/21 2.0K
0.0%
Level 3 Parent, LLC US
161.209.96.0/21 2.0K
0.0%
Level 3 Parent, LLC US
206.203.112.0/21 2.0K
0.0%
McKesson Corp. US
216.235.200.0/21 2.0K
1.9%
Level 3 Parent, LLC US
63.128.0.0/22 1.0K
0.0%
Level 3 Parent, LLC US
63.128.8.0/22 1.0K
0.0%
Level 3 Parent, LLC US
143.112.132.0/22 1.0K
0.0%
Level 3 Parent, LLC US
143.112.248.0/22 1.0K
0.0%
Level 3 Parent, LLC US
205.139.104.0/22 1.0K
2.7%
Level 3 Parent, LLC US
206.203.68.0/22 1.0K
0.0%
Level 3 Parent, LLC US
206.203.84.0/22 1.0K
0.0%
McKesson Corp. US
206.203.124.0/22 1.0K
0.0%
McKesson Corp. US
206.227.192.0/22 1.0K
0.0%
Level 3 Parent, LLC US
206.227.208.0/22 1.0K
0.0%
Level 3 Parent, LLC US
209.67.132.0/22 1.0K
0.0%
Level 3 Parent, LLC US
209.67.136.0/22 1.0K
0.0%
Level 3 Parent, LLC US
209.164.192.0/22 1.0K
3.8%
Level 3 Parent, LLC US
63.150.74.0/23 512
16.2%
Global Payments, Inc. US
64.241.120.0/23 512
0.0%
Level 3 Parent, LLC US
65.240.184.0/23 512
8.6%
Global Payments, Inc. US
143.112.252.0/23 512
0.0%
Level 3 Parent, LLC US
143.199.140.0/23 512
0.0%
Level 3 Parent, LLC US
204.153.154.0/23 512
2.1%
Level 3 Parent, LLC US Arizona Peoria
205.139.102.0/23 512
0.0%
Level 3 Parent, LLC US
206.203.76.0/23 512
0.0%
Level 3 Parent, LLC US
206.203.82.0/23 512
0.0%
McKesson Corp. US
206.203.94.0/23 512
0.0%
McKesson Corp. US
206.203.120.0/23 512
0.0%
McKesson Corp. US
206.227.216.0/23 512
0.0%
Level 3 Parent, LLC US
206.227.220.0/23 512
0.0%
Level 3 Parent, LLC US
206.227.226.0/23 512
0.0%
Level 3 Parent, LLC US
209.164.204.0/23 512
0.0%
Level 3 Parent, LLC US
209.164.208.0/23 512
5.5%
Level 3 Parent, LLC US
209.164.220.0/23 512
4.1%
Level 3 Parent, LLC US
8.7.155.0/24 256
0.4%
Level 3 Parent, LLC US
8.15.229.0/24 256
0.0%
Level 3 Parent, LLC US
8.18.63.0/24 256
0.0%
Level 3 Parent, LLC US
8.20.69.0/24 256
5.5%
Level 3 Parent, LLC US
8.25.26.0/24 256
0.0%
Level 3 Parent, LLC US
8.44.205.0/24 256
0.0%
Level 3 Parent, LLC US
38.107.240.0/24 256
0.0%
Level 3 Parent, LLC US Texas Dallas
62.67.222.0/24 256
0.0%
Level 3 Parent, LLC GB
63.106.6.0/24 256
9.0%
Global Payments, Inc. US
63.128.7.0/24 256
0.0%
Level 3 Parent, LLC US
63.128.12.0/24 256
0.0%
Level 3 Parent, LLC US
63.128.14.0/24 256
0.8%
Level 3 Parent, LLC US Massachusetts Boston
63.128.20.0/24 256
0.0%
Level 3 Parent, LLC US
63.128.24.0/24 256
0.0%
Level 3 Parent, LLC US
63.144.218.0/24 256
15.6%
Global Payments, Inc. US
63.175.205.0/24 256
0.0%
NDCHealth Corporation US Vermont Burlington
63.233.90.0/24 256
99.2%
Dougherty Financial Group LLC US
64.22.148.0/24 256
0.0%
Level 3 Parent, LLC US
64.208.127.0/24 256
8.2%
Level 3 Parent, LLC US
64.209.141.0/24 256
0.0%
Level 3 Parent, LLC US
64.210.246.0/24 256
0.0%
Level 3 Parent, LLC US
65.222.131.0/24 256
93.8%
Level 3 Parent, LLC US Pennsylvania Philadelphia
66.194.187.0/24 256
37.9%
Level 3 Parent, LLC US
128.177.179.0/24 256
7.8%
Level 3 Parent, LLC US Maryland Crofton
143.112.254.0/24 256
0.0%
Level 3 Parent, LLC US
143.199.28.0/24 256
0.0%
Level 3 Parent, LLC US
143.199.96.0/24 256
0.0%
Level 3 Parent, LLC US Massachusetts Medfield
143.199.109.0/24 256
0.0%
Level 3 Parent, LLC US
143.199.135.0/24 256
0.0%
Level 3 Parent, LLC US
143.199.145.0/24 256
0.0%
Level 3 Parent, LLC US
143.199.222.0/24 256
0.0%
Level 3 Parent, LLC US
148.59.168.0/24 256
0.0%
Level 3 Parent, LLC US
148.59.169.0/24 256
0.8%
Level 3 Parent, LLC US
158.120.127.0/24 256
0.4%
Level 3 Parent, LLC US Colorado Colorado Springs
161.209.111.0/24 256
0.0%
Level 3 Parent, LLC US
161.209.225.0/24 256
0.8%
Level 3 Parent, LLC US
170.22.90.0/24 256
0.0%
Level 3 Parent, LLC US
170.203.252.0/24 256
6.3%
Level 3 Parent, LLC US
189.125.51.0/24 256
0.0%
Level 3 Parent, LLC BR
192.26.214.0/24 256
0.0%
Level 3 Parent, LLC US
192.42.110.0/24 256
7.8%
Level 3 Parent, LLC US District of Columbia Washington
192.147.2.0/24 256
0.4%
Level 3 Parent, LLC US
198.135.250.0/24 256
0.0%
Level 3 Parent, LLC US
198.200.148.0/24 256
0.0%
Level 3 Parent, LLC US
204.17.219.0/24 256
0.0%
Cambridge Mercantile Corp. US
204.146.159.0/24 256
0.0%
Level 3 Parent, LLC US

Prefijos BGP anunciados

Anomalías BGP en vivo →

Prefijos AS203 se origina realmente en BGP, observado a través de nuestros colectores RIPE RIS. Esta vista de enrutamiento en vivo puede diferir de la asignación de registro anterior.

PrefixMuestras de anuncioÚltima vez visto
66.193.107.0/24 17,570 2026-09-05 03:35:34
192.26.214.0/24 11,884 2026-09-10 14:07:03
64.210.246.0/24 9,935 2026-09-10 13:50:33
204.146.159.0/24 9,601 2026-09-10 12:50:29
143.199.28.0/24 8,833 2026-09-10 12:50:17
143.199.135.0/24 8,826 2026-09-10 12:50:29
143.199.222.0/24 8,825 2026-09-10 12:51:06
148.59.168.0/24 8,820 2026-09-10 12:50:29
143.199.109.0/24 8,792 2026-09-10 12:50:29
65.121.54.0/24 8,400 2026-09-09 06:55:35
143.199.140.0/23 7,993 2026-09-10 12:50:29
143.199.96.0/24 7,974 2026-09-10 12:51:06
8.18.63.0/24 7,749 2026-09-10 12:49:46
189.125.51.0/24 7,523 2026-09-10 12:05:18
8.44.205.0/24 7,493 2026-09-10 12:49:57
8.20.69.0/24 7,363 2026-09-10 12:50:28
216.163.247.0/24 7,362 2026-09-10 12:50:17
216.163.246.0/24 7,297 2026-09-10 12:50:28
209.164.193.0/24 7,275 2026-09-10 12:50:17
209.164.207.0/24 7,269 2026-09-10 12:50:17
216.163.241.0/24 7,250 2026-09-10 12:50:17
8.25.26.0/24 7,233 2026-09-10 12:51:12
209.164.205.0/24 7,232 2026-09-10 12:50:17
216.163.244.0/24 7,232 2026-09-10 12:51:12
209.164.204.0/24 7,228 2026-09-10 12:50:28
216.163.240.0/24 7,225 2026-09-10 12:50:28
216.163.243.0/24 7,222 2026-09-10 12:50:17
209.164.195.0/24 7,221 2026-09-10 12:50:17
216.163.242.0/24 7,220 2026-09-10 12:50:28
209.164.194.0/24 7,218 2026-09-10 12:50:28
216.163.245.0/24 7,203 2026-09-10 12:51:06
209.164.192.0/24 7,191 2026-09-10 12:50:28
143.199.145.0/24 7,102 2026-09-10 14:02:31
8.15.229.0/24 7,049 2026-09-10 12:49:47
216.33.160.0/24 6,991 2026-09-10 13:50:33
216.163.252.0/24 6,866 2026-09-10 12:50:28
8.7.155.0/24 6,864 2026-09-10 12:49:47
216.163.253.0/24 6,818 2026-09-10 12:50:17
209.164.223.0/24 6,812 2026-09-10 12:50:17
216.163.251.0/24 6,783 2026-09-10 12:51:06
209.164.209.0/24 6,772 2026-09-10 12:51:06
209.164.211.0/24 6,770 2026-09-10 12:50:17
209.164.208.0/24 6,769 2026-09-10 12:49:54
216.163.255.0/24 6,767 2026-09-10 12:50:17
216.163.250.0/24 6,765 2026-09-10 12:49:54
209.164.220.0/24 6,763 2026-09-10 12:49:54
216.163.249.0/24 6,762 2026-09-10 12:50:17
209.164.221.0/24 6,756 2026-09-10 12:51:06
216.163.248.0/24 6,750 2026-09-10 12:50:28
216.163.254.0/24 6,744 2026-09-10 12:50:28

Mostrando los principales 50 of 279 prefijos anunciados por volumen de muestra.

Frequently Asked Questions

¿Qué es AS203?

AS203 es un Número de Sistema Autónomo asignado a Level 3 Parent, LLC. Un ASN identifica una red que controla un conjunto específico de direcciones IP y determina cómo se enruta el tráfico a través de internet mediante BGP (Border Gateway Protocol).

¿Cuántas direcciones IP anuncia AS203?

AS203 anuncia 307.7K direcciones IPv4 distribuidas en 104 prefijos CIDR enrutados. La red está registrada en United States.

¿Quién opera AS203?

AS203 es operado por Level 3 Parent, LLC. La organización tiene su sede en United States. Puedes ver todos los rangos de IP y los ASNs relacionados en la página de la organización.

¿En qué país está registrado AS203?

AS203 está registrado en United States. Esto indica dónde tiene su sede el operador de red, aunque las direcciones IP que anuncia pueden servir a usuarios a nivel global.

Última actualización: 2026-09-10 14:41:01 UTC
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