AS27399 BAM-US - Balyasny Asset Management L.P.

🇺🇸

ARINassigned

Announced Prefixes (BGP)

11total

11 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)1,280

Announced (BGP)2,816

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2003-02-26

Announced Prefixes

(BGP)11

Prefix	RPKI	IRR	Last Seen
38.89.137.0/24	No ROA	-	2026-10-11
38.103.125.0/24	No ROA	Other IRR	2026-10-11
38.126.139.0/24	No ROA	Other IRR	2026-10-11
38.131.243.0/24	No ROA	Other IRR	2026-10-11
67.155.2.0/24	No ROA	ARIN	2026-10-11
82.98.194.0/24	Valid	RIPE	2026-10-11
103.158.202.0/24	No ROA	APNICOther IRR	2026-10-11
103.158.203.0/24	No ROA	APNIC	2026-10-11
136.175.142.0/24	No ROA	ARIN	2026-10-11
136.175.143.0/24	No ROA	ARIN	2026-10-11

1-10 of 11

1 / 2

(RIR)4

Prefix	Country	RIR	Status
82.98.194.0/24	🇬🇧 GB	RIPE	assigned
103.158.203.0/24	🇸🇬 SG	APNIC	assigned
136.175.142.0/23	🇺🇸 US	ARIN	allocated
185.179.88.0/24	🇬🇧 GB	RIPENCC	allocated

(seen in AS paths)

Networks AS27399 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 AS27399 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/27399" | jq