Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About SURFnet
SURF is an organization that develops, implements and maintains the national research and education network (NREN) of the Netherlands. It operates the national research network formally called SURFnet.
Operates 3 networks present at 5 internet exchanges with a open peering policy.
SURF B.V. — global IP footprint
Cities where SURF B.V. has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Countries served by SURF B.V.
Every country where this organization has IPv4 allocations, ranked by IPs held.
ASNs owned by SURF B.V.
| ASN | Name | IPs | Prefixes | Country |
|---|---|---|---|---|
| AS1103 | SURF B.V. | 7.20M | 120 | NL |
| AS1101 | SURF B.V. | 1.90M | 15 | NL |
| AS1199 | SURF B.V. | 590.8K | 3 | NL |
| AS1128 | SURF B.V. | 196.6K | 3 | NL |
| AS1161 | SURF B.V. | 69.6K | 2 | NL |
| AS1133 | SURF B.V. | 65.5K | 1 | NL |
| AS1147 | SURF B.V. | 34.8K | 2 | NL |
| AS1145 | SURF B.V. | 4.1K | 1 | NL |
| AS1152 | SURF B.V. | 2.6K | 2 | NL |
| AS1102 | SURF B.V. | 1.3K | 4 | NL |
| AS1149 | SURF B.V. | 1.0K | 3 | NL |
Largest CIDR ranges
Frequently Asked Questions
How many IP addresses does SURF B.V. own?
SURF B.V. controls 9.54M IPv4 addresses distributed across 156 CIDR ranges. The organization is registered in The Netherlands.
What ASNs does SURF B.V. operate?
SURF B.V. operates 11 Autonomous Systems. Each ASN represents an independently routed network that SURF B.V. manages for internet traffic delivery.
What type of organization is SURF B.V.?
SURF B.V. is categorized as enterprise. This classification is based on the organization's primary use of its IP address allocations.
