Tismi BV

Data as of 2026-11-08
BGP inherited
This organisation
Netblocks39 · 3,849 IPv4 addresses
IPv6 17 prefixes (largest 2a01:7520::/32)
Registered in Netherlands (22) · Germany (2) · United Kingdom (2) · Norway (2) · Switzerland (1)
Also registered under this name 50 netblocks across 3 separate records
Record ID264655545
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 10 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 (39)

⬇ export CSV
CIDR Org name Registry Status Confidence
37.202.25.0/24 Tismi BV BGP ANNOUNCED ● high
89.107.28.0/24 Tismi BV BGP ANNOUNCED ● high
89.107.28.0/22 Tismi BV BGP ANNOUNCED ● high
89.107.29.0/24 Tismi BV BGP ANNOUNCED ● high
89.107.30.0/24 Tismi BV BGP ANNOUNCED ● high
91.206.52.180/32 Tismi PEERINGDB ASSIGNED ● high
185.1.102.81/32 Tismi PEERINGDB ASSIGNED ● high
185.1.102.82/32 Tismi PEERINGDB ASSIGNED ● high
185.1.112.61/32 Tismi PEERINGDB ASSIGNED ● high
185.1.112.62/32 Tismi PEERINGDB ASSIGNED ● high
185.1.222.164/32 Tismi PEERINGDB ASSIGNED ● high
185.44.160.0/22 Tismi BV BGP ANNOUNCED ● high
185.44.163.0/24 Tismi BV BGP ANNOUNCED ● high
185.163.80.0/22 Tismi BV BGP ANNOUNCED ● high
185.163.80.0/24 Tismi BV BGP ANNOUNCED ● high
185.163.81.0/24 Tismi BV BGP ANNOUNCED ● high
185.163.82.0/23 Tismi BV BGP ANNOUNCED ● high
185.163.83.0/24 Tismi BV BGP ANNOUNCED ● high
193.142.108.0/23 Tismi BV BGP ANNOUNCED ● high
193.239.118.60/32 Tismi PEERINGDB ASSIGNED ● high
195.66.225.48/32 Tismi PEERINGDB ASSIGNED ● high
195.66.237.48/32 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:4::f2d7:1/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:4:1::f2d7:1/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:13::a506:2167:1/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:24::b4/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:83::6:2167:1/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:83::6:2167:2/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:b7::a506:2167:1/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:bd::6:2167:1/128 Tismi PEERINGDB ASSIGNED ● high
2001:7f8:bd::6:2167:2/128 Tismi PEERINGDB ASSIGNED ● high
2a00:be40:2::/48 Tismi BV BGP ANNOUNCED ● high
2a01:7520::/32 Tismi BV BGP ANNOUNCED ● high
2a01:7520:4::/48 Tismi BV BGP ANNOUNCED ● high
2a01:7520:5::/48 Tismi BV BGP ANNOUNCED ● high
2a01:7520:6::/48 Tismi BV BGP ANNOUNCED ● high
2a01:7520:7::/48 Tismi BV BGP ANNOUNCED ● high
2a01:7520:8::/48 Tismi BV BGP ANNOUNCED ● high
2a0b:5800::/32 Tismi BV BGP ANNOUNCED ● high

IPv6 ranges (17)

CIDR
2a01:7520::/32
2a0b:5800::/32
2a00:be40:2::/48
2a01:7520:4::/48
2a01:7520:5::/48
2a01:7520:6::/48
2a01:7520:7::/48
2a01:7520:8::/48
2001:7f8:13::a506:2167:1/128
2001:7f8:24::b4/128
2001:7f8:4:1::f2d7:1/128
2001:7f8:4::f2d7:1/128
2001:7f8:83::6:2167:1/128
2001:7f8:83::6:2167:2/128
2001:7f8:b7::a506:2167:1/128
2001:7f8:bd::6:2167:1/128
2001:7f8:bd::6:2167:2/128

Footprint over time

20 weekly snapshots · JSON
48 0 netblocks since 2026-07-05
2026-07-05 peak 48 2026-11-08

Network trust

what's this?
RPKI hygiene: A how networks compare →
97.9% of checked blocks have valid RPKI ROA coverage (47 of 48)
Possible discrepancies (1)

These blocks are registered to Tismi BV but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

193.142.108.0/23 /23 authorized for AS10753 — Level 3 Parent, LLC

NIC Handles

AS10753 AS62167 AS62167 DUMY-RIPE DUMY-RIPE ORG-TB58-RIPE RIPE-NCC-HM-MNT nl-tismi-1-mnt nl-tismi-1-mnt vianett-mnt