AS42081 ecmwf-it European Centre for Medium-Range Weather Forecasts (ECMWF)

🇬🇧

Org handle: ORG-ECFM5-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

9total

7 IPv42 IPv6

IPv4 Addresses

Allocated (RIR)83,712

Announced (BGP)28,416

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)2.4×10²⁴

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

RIR

Status

allocated

Allocated

2018-12-14

Announced Prefixes

(BGP)9

Prefix	RPKI	IRR	Last Seen
77.83.224.0/23	No ROA	RIPE	2026-10-11
77.83.226.0/24	No ROA	RIPE	2026-10-11
136.156.32.0/22	No ROA	RIPE	2026-10-11
136.156.40.0/21	No ROA	RIPE	2026-10-11
136.156.128.0/20	No ROA	RIPE	2026-10-11
136.156.144.0/20	No ROA	RIPE	2026-10-11
136.156.192.0/18	No ROA	RIPE	2026-10-11
2a09:9180:ecfb::/48	No ROA	RIPE	2026-10-11
2a09:9180:ecfd::/48	No ROA	RIPE	2026-10-11

(RIR)8

Prefix	Country	RIR	Status
77.83.224.0/22	🇬🇧 GB	RIPENCC	allocated
77.83.224.0/23	🇮🇹 IT	RIPE	assigned
77.83.226.0/24	🇮🇹 IT	RIPE	assigned
136.156.0.0/16	🇬🇧 GB	RIPENCC	assigned
136.156.192.0/18	🇮🇹 IT	RIPE	assigned
2a09:9180::/32	🇬🇧 GB	RIPENCC	allocated
2a09:9180:ecfb::/48	🇮🇹 IT	RIPE	assigned
2a09:9180:ecfd::/48	🇮🇹 IT	RIPE	assigned

(seen in AS paths)

Networks AS42081 hands its own prefixes to: transit providers, or peers at an exchange.

ASPA

No ASPA

Abuse Contact

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 AS42081 should publish an ASPA object
IPv4 transfers in the RIPE NCC 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/42081" | jq