Core-Backbone GmbH

GLEIF verified
LEI
2549001QHHVX9WJEEA81
Registered name
Core-Backbone GmbH
Jurisdiction
DE
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks458 · 86,512 IPv4 addresses
Registered in Germany (127) · Spain (10) · AG (3) · United Kingdom (2) · Czechia (2) · Italy (2)
All fragments 494 blocks across 23 clusters
Cluster ID208799793
RegistryBGP
Owner jurisdictionDE
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 2549001QHHVX9WJEEA81
Shared handles clustered on 19 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
456 0 netblocks since 2026-07-05
2026-07-05 peak 456 2026-07-19

IP Ranges (458)

showing 50 of 458 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
2.59.28.0/22 Core-Backbone GmbH BGP ANNOUNCED ● high
5.56.16.0/21 Core-Backbone GmbH BGP ANNOUNCED ● high
5.57.82.220/32 Core-Backbone PEERINGDB ASSIGNED ● high
27.111.228.116/32 Core-Backbone PEERINGDB ASSIGNED ● high
31.7.176.0/20 Core-Backbone GmbH BGP ANNOUNCED ● high
31.7.177.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
37.49.237.55/32 Core-Backbone PEERINGDB ASSIGNED ● high
45.153.58.72/32 Core-Backbone GmbH BGP ANNOUNCED ● high
80.81.192.187/32 Core-Backbone PEERINGDB ASSIGNED ● high
80.81.195.147/32 Core-Backbone PEERINGDB ASSIGNED ● high
80.249.209.128/32 Core-Backbone PEERINGDB ASSIGNED ● high
80.255.0.0/20 Core-Backbone GmbH BGP ANNOUNCED ● high
81.95.0.0/20 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.128.0/19 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.130.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.131.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.147.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.148.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.149.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.157.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.158.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
82.199.159.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
83.142.80.0/21 Core-Backbone GmbH BGP ANNOUNCED ● high
91.194.237.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
91.206.52.191/32 Core-Backbone PEERINGDB ASSIGNED ● high
91.210.16.147/32 Core-Backbone PEERINGDB ASSIGNED ● high
91.232.96.0/23 Core-Backbone GmbH BGP ANNOUNCED ● high
92.43.104.0/21 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.208.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.209.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.210.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.211.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.212.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.213.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.214.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
93.159.215.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
101.203.78.58/32 Core-Backbone PEERINGDB ASSIGNED ● high
102.222.214.0/24 Core-Backbone GmbH BGP ANNOUNCED ● high
130.185.104.0/21 Core-Backbone GmbH BGP ANNOUNCED ● high
130.185.104.0/24 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.105.0/25 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.105.128/25 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.106.0/24 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.107.0/24 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.108.16/28 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.108.32/28 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.108.48/28 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.108.64/27 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.108.96/27 Core-Backbone GmbH RIPE ASSIGNED PA ● high
130.185.108.128/26 Core-Backbone GmbH RIPE ASSIGNED PA ● high

Domains hosted in this network

what's this?
a-blast.org assoziations-blaster.de

Customer-delegated space

how is this classified?
Unclassified 394 (86.0%)
Operator infrastructure (named) 64 (14.0%)

Network trust

what's this?
RPKI hygiene: B how networks compare →
93.9% of checked blocks have valid RPKI ROA coverage (430 of 458)
No discrepancies found among checked blocks.

NIC Handles

AS201011 AS33891 AS33891 AS51191 CORE-BACKBONE CORE-BACKBONE CSPIT DUMY-RIPE DUMY-RIPE MITTWALD-MNT NETZBETRIEB ORG-IICG1-RIPE +7 more