DIFFER AS

Differ Communications Limited
Data as of 2026-11-01
GLEIF verified
LEI
6367004OY6BYKBFA1I06
Registered name
DIFFER AS
Jurisdiction
NO
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks12 · 2,561 IPv4 addresses
IPv6 4 prefixes (largest 2606:d040::/32)
Registered in Canada (7) · Netherlands (2)
Record ID259794415
RegistryBGP
Owner jurisdictionNO
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 6367004OY6BYKBFA1I06
Shared handles clustered on 13 shared RIR contact/maintainer handles
Registry names 5 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (12)

⬇ export CSV
CIDR Org name Registry Status Confidence
23.136.82.0/25 Differ Communications ARIN ASSIGNMENT ● high
23.136.82.0/24 Differ Communications Limited BGP ANNOUNCED ● high
206.108.34.30/32 Differ PEERINGDB ASSIGNED ● high
216.211.200.0/24 Differ Communications Limited BGP ANNOUNCED ● high
216.211.200.0/26 Differ Communications ARIN ASSIGNMENT ● high
2001:504:1a::34:30/128 Differ PEERINGDB ASSIGNED ● high
2606:d040:1000::/36 Differ Communications Limited BGP ANNOUNCED ● high
216.211.200.0/22 Differ Communications Limited ARIN DIRECT ALLOCATION ● medium
2606:d040::/32 Differ Communications Limited ARIN DIRECT ALLOCATION ● medium
145.144.232.0/22 DIFFER-NET RIPE LEGACY ● low
192.87.183.0/24 DIFFER-NET RIPE LEGACY ● low
2001:610:520::/48 DIFFER-NET RIPE ALLOCATED-BY-LIR ● low

IPv6 ranges (4)

CIDR
2606:d040::/32
2606:d040:1000::/36
2001:610:520::/48
2001:504:1a::34:30/128

Footprint over time

19 weekly snapshots · JSON
13 +5 netblocks since 2026-07-05
2026-07-05 peak 13 2026-11-01

Network trust

what's this?
RPKI hygiene: D how networks compare →
38.5% of checked blocks have valid RPKI ROA coverage (5 of 13)
No discrepancies found among checked blocks.
Routed via provider/NREN (3)

These blocks are cryptographically authorized for this organisation's national research & education network or transit provider — expected topology for an institution that routes through it, not a discrepancy.

2001:610:520::/48 /48 routed via AS1103 — SURF (SURF B.V.)
145.144.232.0/22 /22 routed via AS1103 — SURF (SURF B.V.)
192.87.183.0/24 /24 routed via AS1103 — SURF (SURF B.V.)

NIC Handles

AS399558 AS399558 C11029447 C11029469 DCL-722 DUMY-RIPE DUMY-RIPE NETWO9433-ARIN NETWO9433-ARIN NETWO9433-ARIN NETWO9433-ARIN SN-LIR-MNT +1 more