Home ASN LookupAS43872

AS43872 OPTINET Optinet U.K. Limited

🇬🇧

Org handle: ORG-OUL4-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

27total

20 IPv47 IPv6

IPv4 Addresses

Allocated (RIR)10,496

Announced (BGP)10,496

IPv6 Addresses

Allocated (RIR)4.4×10³⁰

Announced (BGP)4.4×10³⁰

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇬🇧 GB

RIR

RIPE NCC

Status

allocated

Allocated

2016-12-20

Announced Prefixes

(BGP)27

Prefix	RPKI	IRR	Last Seen
5.253.252.0/22	Valid	RIPE	2026-10-11
45.136.108.0/24	Valid	RIPE	2026-10-11
84.38.246.0/24	Valid	-	2026-10-11
89.222.48.0/21	Valid	-	2026-10-11
89.222.56.0/22	Valid	-	2026-10-11
89.222.60.0/23	Valid	-	2026-10-11
89.222.62.0/23	Valid	-	2026-10-11
91.201.105.0/24	Valid	RIPE	2026-10-11
92.118.111.0/24	Valid	RIPE	2026-10-11
176.101.169.0/24	Valid	RIPE	2026-10-11

1-10 of 27

1 / 3

Allocated Prefixes

(RIR)24

Prefix	Country	RIR	Status
5.253.252.0/22	🇬🇧 GB	RIPENCC	allocated
45.136.108.0/24	🇬🇧 GB	RIPENCC	allocated
84.38.246.0/24	🇬🇧 GB	RIPENCC	allocated
89.222.48.0/20	🇬🇧 GB	RIPENCC	allocated
91.201.105.0/24	🇬🇧 GB	RIPENCC	allocated
92.118.111.0/24	🇬🇧 GB	RIPENCC	allocated
176.101.169.0/24	🇬🇧 GB	RIPENCC	allocated
185.183.20.0/22	🇬🇧 GB	RIPENCC	allocated
185.187.61.0/24	🇬🇧 GB	RIPENCC	allocated
185.253.176.0/22	🇬🇧 GB	RIPENCC	allocated

1-10 of 24

1 / 3

All 27 announced prefixes of AS43872 →

BGP Neighbours

(seen in AS paths)

Upstreams (6)

Networks AS43872 hands its own prefixes to: transit providers, or peers at an exchange.

AS14840BR.Digital Telecom15
AS174Cogent Communications5
AS1299TWELVE99 Arelion Sweden AB4
AS6461Zayo Bandwidth1
AS34177CELESTE SAS1
AS34549MEER Meerfarbig & . KG1

ASPA

No ASPA

Abuse Contact

External Links

RIPE Whois RIPEstat

Learn more

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 AS43872 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

Open

GEThttps://api.ipctl.io/v1/asn/43872

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

curl -s "https://api.ipctl.io/v1/asn/43872" | jq