G M DA COSTA INTERNET

BGP inherited

Cluster stats

Netblocks	8
All fragments	35 blocks across 18 clusters
Cluster ID	213183778
Registry	PEERINGDB
Customers	find customers using this network →

Evidence & provenance ?

Attribution	BGP parent (inherited)
Shared handles	clustered on 1 shared RIR contact/maintainer handle
Registry names	1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON

8 -9 netblocks since 2026-07-05

2026-07-05 peak 17 2026-07-19

IP Ranges (8)

⬇ export CSV

CIDR	Org name	Registry	Status	Confidence
187.16.210.248/32	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
187.16.219.239/32	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
187.16.221.91/32	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
187.16.223.237/32	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
2001:12f8::210:248/128	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
2001:12f8::219:239/128	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
2001:12f8::221:91/128	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high
2001:12f8::223:237/128	G M DA COSTA INTERNET	PEERINGDB	ASSIGNED	● high

Possibly related to this organisation

what's this?

Same name family

Separately-registered clusters whose names share “G M” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

G-M-O-MILANO-GROSSMARKETOPTICA 4 blocks
G-M-U-GRAZIANOMACCHINEUFFICIOS 3 blocks
G-M-FINANCE 3 blocks
G-M-CONSULTINGS-R-L 2 blocks
G-M-W-BURGHAUN-NET 2 blocks
G-M-KUNSTSTOFFTECHNIK-PEINE-NET 2 blocks
G-M-MECCANICASRL 1 blocks
G-M-A-COSTRUZIONIS-R-L 1 blocks

Combined view of all 18 name-family clusters →

Network trust

what's this?

RPKI hygiene: A how networks compare →

100.0% of checked blocks have valid RPKI ROA coverage (8 of 8)

No discrepancies found among checked blocks.

NIC Handles

AS266962