AS36671 TWOSIGMA2 - TWO SIGMA INVESTMENTS, LP

🇺🇸

ARINassigned

Announced Prefixes (BGP)

16total

14 IPv42 IPv6

IPv4 Addresses

Allocated (RIR)1,536

Announced (BGP)4,352

IPv6 Addresses

Allocated (RIR)3×10²⁶

Announced (BGP)3.1×10²⁶

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2006-03-14

Announced Prefixes

(BGP)16

Prefix	RPKI	IRR	Last Seen
8.2.105.0/24	No ROA	ARIN	2026-10-11
8.245.33.0/24	No ROA	ARINOther IRR	2026-10-11
38.27.161.0/24	No ROA	Other IRR	2026-10-11
38.97.45.0/24	No ROA	Other IRR	2026-10-11
38.108.14.0/24	No ROA	Other IRR	2026-10-11
38.117.134.0/24	No ROA	Other IRR	2026-10-11
46.183.200.0/24	No ROA	RIPE	2026-10-11
46.183.201.0/24	No ROA	RIPE	2026-10-11
207.226.133.0/24	Valid	APNIC	2026-10-11
208.77.212.0/22	Valid	ARIN	2026-10-11

1-10 of 16

1 / 2

(RIR)4

Prefix	Country	RIR	Status
46.183.201.0/24	🇬🇧 GB	RIPE	assigned
208.77.212.0/22	🇺🇸 US	ARIN	allocated
212.133.79.0/24	🇬🇧 GB	RIPE	assigned
2620:106:3000::/40	🇺🇸 US	ARIN	allocated

(seen in AS paths)

Networks AS36671 hands its own prefixes to: transit providers, or peers at an exchange.

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 AS36671 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/36671" | jq