Organization
SURF B.V.
SURFNET-AS
Registered
Sep 01, 1993
33 years ago
IPv4 Prefixes
4
1,024 addresses
IPv6 Prefixes
1
128 × /48
BGP Neighbours
1
1 upstream/peer · 0 downstream
Registration
AS Number AS1149 AS Name SURFNET-AS Organization SURF B.V. Organization ID ORG-Sb3-RIPE Address P.O. Box 19035, 3501 DA, Utrecht, NETHERLANDS Country Netherlands (NL) Registry RIPE NCC Allocated Sep 01, 1993 Record Created Aug 21, 2002 Last Updated Sep 03, 2019 Status
active
WHOIS Server whois.ripe.net AS Description SURFNET-AS - SURF B.V., NL Remarks Tijdelijk uitgeleend aan UTWENTE voor onderzoek Abuse Email [email protected] Abuse Phone +31 88 7873000 IPv4 Prefixes
4 prefixes · 1,024 addresses Routing data as of 2026-10-08 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 145.100.118.0/24 | 145.100.118.0 – 145.100.118.255 | 256 |
| 145.100.119.0/24 | 145.100.119.0 – 145.100.119.255 | 256 |
| 145.116.218.0/24 | 145.116.218.0 – 145.116.218.255 | 256 |
| 145.116.219.0/24 | 145.116.219.0 – 145.116.219.255 | 256 |
IPv6 Prefixes
1 prefix · 128 × /48 Routing data as of 2026-10-08 16:00 UTC
| Prefix | Addresses |
|---|---|
| 2001:610:9000:: | 287 |
BGP Neighbours
1 unique neighbour · 1 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS20473 AS-VULTR - The Constant Company, LLC 614 1,439 373
Raw RDAP Response
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"startAutnum": 1149,
"endAutnum": 1149,
"name": "SURFNET-AS",
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[
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{
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[
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{
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{
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{
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{
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{
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{
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{
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},
{
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],
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{
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{},
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]
]
],
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"links": [
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},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
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}
],
"objectClassName": "entity"
}
],
"objectClassName": "entity"
}
],
"remarks": [
{
"description": [
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]
}
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "rdap-up",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS1149",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "rdap-up rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS1149?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "rdap-down",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-down/AS1149",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "rdap-top",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS1149",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "rdap-top rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS1149?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "rdap-bottom",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-bottom/AS1149",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "self",
"href": "https://rdap.db.ripe.net/autnum/1149",
"type": "application/rdap+json"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2002-08-21T16:06:47Z"
},
{
"eventAction": "last changed",
"eventDate": "2019-09-03T09:22:57Z"
}
],
"rdapConformance": [
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"rirSearch1",
"autnums",
"cidr0",
"rdap_level_0",
"nro_rdap_profile_0",
"redacted"
],
"notices": [
{
"title": "Filtered",
"description": [
"This output has been filtered."
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit:"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "inaccuracy-report",
"href": "https://www.ripe.net/contact-form?topic=ripe_dbm&show_form=true",
"type": "text/html"
}
]
},
{
"title": "Source",
"description": [
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"RIPE"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the RIPE Database query service. The objects are in RDAP format."
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/1149",
"rel": "terms-of-service",
"href": "http://www.ripe.net/db/support/db-terms-conditions.pdf",
"type": "application/pdf"
}
]
}
],
"port43": "whois.ripe.net",
"objectClassName": "autnum",
"redacted": [
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='ORG-Sb3-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='SNS1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='SNS1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
}
]
} Contact details of private individuals are redacted.