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Autonomous System

AS1280

Internet Systems Consortium, Inc.

Announced IPs
23,552
CIDR prefixes
21
ASN
AS1280

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 Internet Systems Consortium

Internet Systems Consortium, Inc., also known as ISC, is an American non-profit corporation that supports the infrastructure of the universal, self-organizing Internet by developing and maintaining core production-quality software, protocols, and operations. ISC has developed several key Internet technologies that enable the global Internet, including: BIND, ISC DHCP and Kea.

Founded
1994
Headquarters
Redwood City

Network profile

Source: PeeringDB →
Network type Non-Profit
Geographic scope Global
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS1280:AS-SET

Present at 1 internet exchange: Equinix Palo Alto

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
149.20.16.0/20 4.1K
0.0%
Internet Systems Consortium, Inc. US
149.20.32.0/20 4.1K
0.0%
Internet Systems Consortium, Inc. US
149.20.48.0/21 2.0K
0.0%
Internet Systems Consortium, Inc. US
149.20.72.0/21 2.0K
0.0%
Internet Systems Consortium, Inc. US Michigan Traverse City
149.20.80.0/21 2.0K
0.0%
Internet Systems Consortium, Inc. US
204.152.184.0/21 2.0K
0.0%
Internet Systems Consortium, Inc. US
149.20.12.0/22 1.0K
0.0%
Internet Systems Consortium, Inc. US
149.20.60.0/22 1.0K
0.0%
Internet Systems Consortium, Inc. US
149.20.92.0/22 1.0K
0.0%
Internet Systems Consortium, Inc. US
149.20.0.0/23 512
0.0%
Internet Systems Consortium, Inc. US
149.20.6.0/23 512
9.4%
Internet Systems Consortium, Inc. US
149.20.58.0/23 512
0.0%
Internet Systems Consortium, Inc. US
149.20.64.0/23 512
0.4%
Internet Systems Consortium, Inc. US
149.20.90.0/23 512
0.0%
Internet Systems Consortium, Inc. US
149.20.1.0/24 256
0.0%
Internet Systems Consortium, Inc. US
149.20.8.0/24 256
7.8%
Internet Systems Consortium, Inc. US
149.20.10.0/24 256
0.0%
Internet Systems Consortium, Inc. US
149.20.56.0/24 256
0.0%
Internet Systems Consortium, Inc. US
149.20.88.0/24 256
0.0%
Internet Systems Consortium, Inc. US
192.111.107.0/24 256
3.1%
Internet Systems Consortium, Inc. US
192.158.252.0/24 256
13.7%
Internet Systems Consortium, Inc. US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS1280 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
149.20.8.0/24 10,433 2026-09-10 15:07:15
149.20.7.0/24 10,403 2026-09-10 15:07:15
192.158.252.0/24 10,401 2026-09-10 15:06:54
204.152.190.0/24 10,347 2026-09-10 15:06:25
204.152.191.0/24 10,324 2026-09-10 15:06:25
149.20.59.0/24 10,290 2026-09-10 15:07:40
149.20.61.0/24 10,283 2026-09-10 15:07:15
149.20.60.0/24 10,279 2026-09-10 15:07:15
149.20.85.0/24 10,263 2026-09-10 15:07:15
149.20.54.0/24 10,261 2026-09-10 15:07:15
149.20.86.0/24 10,256 2026-09-10 15:07:15
149.20.87.0/24 10,254 2026-09-10 15:07:15
204.152.186.0/24 10,242 2026-09-10 15:06:25
149.20.81.0/24 10,242 2026-09-10 15:07:15
204.152.187.0/24 10,228 2026-09-10 15:06:25
149.20.84.0/24 10,226 2026-09-10 15:07:15
204.152.188.0/24 10,214 2026-09-10 15:06:25
204.152.185.0/24 10,214 2026-09-10 15:06:25
204.152.189.0/24 10,206 2026-09-10 15:06:25
204.152.184.0/24 10,203 2026-09-10 15:06:25
204.152.184.0/21 9,823 2026-09-10 15:06:25
149.20.64.0/24 8,302 2026-09-10 15:07:13
149.20.30.0/24 8,299 2026-09-10 15:07:13
149.20.31.0/24 8,277 2026-09-10 15:07:13
149.20.65.0/24 8,251 2026-09-10 15:07:13
149.20.33.0/24 8,235 2026-09-10 15:07:13
149.20.23.0/24 8,219 2026-09-10 15:07:13
149.20.56.0/24 8,215 2026-09-10 15:07:37
149.20.32.0/24 8,214 2026-09-10 15:07:13
149.20.22.0/24 8,214 2026-09-10 15:07:13
149.20.52.0/24 8,210 2026-09-10 15:07:37
149.20.63.0/24 8,203 2026-09-10 15:07:37
149.20.62.0/24 8,197 2026-09-10 15:07:37
149.20.46.0/24 8,196 2026-09-10 15:07:37
149.20.90.0/24 8,195 2026-09-10 15:07:13
149.20.48.0/24 8,194 2026-09-10 15:07:37
149.20.26.0/24 8,193 2026-09-10 15:07:13
149.20.19.0/24 8,192 2026-09-10 15:07:13
149.20.25.0/24 8,192 2026-09-10 15:07:13
149.20.51.0/24 8,190 2026-09-10 15:07:37
149.20.93.0/24 8,186 2026-09-10 15:07:13
149.20.94.0/24 8,185 2026-09-10 15:07:13
149.20.24.0/24 8,184 2026-09-10 15:07:13
149.20.21.0/24 8,183 2026-09-10 15:07:13
149.20.27.0/24 8,179 2026-09-10 15:07:13
149.20.28.0/24 8,178 2026-09-10 15:07:13
149.20.29.0/24 8,176 2026-09-10 15:07:13
149.20.75.0/24 8,175 2026-09-10 15:07:13
149.20.18.0/24 8,175 2026-09-10 15:07:13
149.20.72.0/24 8,174 2026-09-10 15:07:13

Showing top 50 of 102 announced prefixes by sample volume.

Frequently Asked Questions

What is AS1280?

AS1280 is an Autonomous System Number assigned to Internet Systems Consortium, Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS1280 announce?

AS1280 announces 23.6K IPv4 addresses distributed across 21 routed CIDR prefixes. The network is registered in United States.

Who operates AS1280?

AS1280 is operated by Internet Systems Consortium, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS1280 registered in?

AS1280 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-10 15:24:05 UTC
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