AS33071 ISC-F-AS - Internet Systems Consortium, Inc.

🇺🇸

ARINassigned

Announced Prefixes (BGP)

2total

1 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)256

IPv6 Addresses

Allocated (RIR)1.2×10²⁴

Announced (BGP)1.2×10²⁴

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2004-09-28

Announced Prefixes

(BGP)2

Prefix	RPKI	IRR	Last Seen
199.6.0.0/24	Valid	Other IRR	2026-10-11
2001:500:71::/48	Valid	-	2026-10-11

(RIR)1

Prefix	Country	RIR	Status
2001:500:71::/48	🇺🇸 US	ARIN	allocated

(seen in AS paths)

Networks AS33071 hands its own prefixes to: transit providers, or peers at an exchange.

Networks whose own prefixes AS33071 passes on: usually its customers.

ASPA

No ASPA

External Links

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS33071 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/33071" | jq