Home ASN LookupAS51400

AS51400 ASSPOJENET SPOJE.NET s.r.o.

🇨🇿

Org handle: ORG-SPOJ1-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

2total

1 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)2,048

Announced (BGP)2,048

IPv6 Addresses

Allocated (RIR)1.2×10²⁴

Announced (BGP)1.2×10²⁴

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇨🇿 CZ

RIR

RIPE NCC

Status

allocated

Allocated

2010-08-13

Announced Prefixes

(BGP)2

Prefix	RPKI	IRR	Last Seen
77.87.240.0/21	Valid	RIPE	2026-10-10
2001:67c:2190::/48	Valid	RIPE	2026-10-10

Allocated Prefixes

(RIR)2

Prefix	Country	RIR	Status
77.87.240.0/21	🇨🇿 CZ	RIPENCC	assigned
2001:67c:2190::/48	🇨🇿 CZ	RIPENCC	assigned

All 2 announced prefixes of AS51400 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS51400 hands its own prefixes to: transit providers, or peers at an exchange.

AS51800FIBERNET ASN FIBER Network S.R.O2

Other adjacent networks (1)

Adjacent to AS51400 in the transit part of AS paths: peers, providers or customers.

AS8251NFX ZSPO FreeTel, S.R.O1

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 AS51400 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/51400

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

curl -s "https://api.ipctl.io/v1/asn/51400" | jq