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Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS12874
FASTWEB Fastweb SpA Announcing routesAS nameFASTWEB
OrganisationFASTWEB-MNT
Registry (RIR)RIPE NCC
HandleAS12874
RangeAS12874
Registered13 Sep 2002
Last changed06 Oct 2026
Abuse contact[email protected]
110IPv4 prefixes
18IPv6 prefixes
31Upstreams
210Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS3303 | SWISSCOM Swisscom (Schweiz) AG | 8594 |
| AS3356 | LEVEL3 - Level 3 Parent, LLC | 5911 |
| AS1299 | TWELVE99 Arelion Sweden AB | 4084 |
| AS6762 | SEABONE-NET TELECOM ITALIA SPARKLE S.p.A. | 2446 |
| AS9002 | RETN-AS RETN Limited | 1733 |
| AS34549 | MEER-AS meerfarbig GmbH & Co. KG | 1066 |
| AS6461 | ZAYO-6461 - Zayo Bandwidth | 602 |
| AS13030 | INIT7 Init7 (Switzerland) Ltd. | 447 |
| AS50673 | Serverius-as Serverius Holding B.V. | 439 |
| AS37497 | Network Platforms (PTY) LTD - Network Platforms (PTY) LTD | 434 |
| AS8218 | NEO-ASN Zayo Infrastructure France SA | 431 |
| AS60068 | CDN77 Datacamp Limited | 396 |
| AS1764 | NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH | 363 |
| AS56655 | GIGAHOST Gigahost AS | 247 |
| AS39351 | ESAB-AS 31173 Services AB | 240 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS42764 | ORG-AS304-RIPE Arpitel s.r.l. | 761 |
| AS43976 | POSTEITALIANE-AS Poste Italiane S.p.A. | 709 |
| AS196874 | TELENET-RSM Telenet S.r.l. | 627 |
| AS3573 | ACCENTURE - Accenture LLP | 466 |
| AS47875 | PROVINCIA-DI-PADOVA-AS Provincia di Padova | 424 |
| AS196749 | BBANDA BBANDA S.R.L. | 329 |
| AS206588 | ItaliaNetCom CIRILLO MATTEO trading as ITALIA NET-COM | 300 |
| AS5397 | INROMA-AS CINECA CONSORZIO INTERUNIVERSITARIO | 292 |
| AS21433 | AccentureFSSC Accenture UK Limited | 288 |
| AS44512 | KONVERTO-AS KONVERTO SPA | 281 |
| AS12650 | Ilsole24ore Il Sole 24 Ore SpA | 279 |
| AS57144 | ICCREA-AS BCC SISTEMI INFORMATICI S.P.A. | 276 |
| AS196784 | REALEMUTUA-AS Reale Mutua di Assicurazioni | 272 |
| AS20942 | ISP-ASn2 Intesa Sanpaolo S.p.A. | 265 |
| AS51580 | TIMENET-AS TIMENET SPA | 246 |
IPv4 prefixes (110)
81.208.64.0/18185.169.184.0/2485.18.128.0/17213.156.48.0/2062.101.96.0/1991.225.244.0/2289.39.200.0/24193.35.4.0/22193.43.17.0/2493.43.0.0/1693.32.0.0/1589.96.0.0/162.232.0.0/13185.162.179.0/24185.169.187.0/24185.69.188.0/2262.101.64.0/19193.43.16.0/2483.103.0.0/17185.146.134.0/24185.223.153.0/24185.7.112.0/222.224.0.0/1362.101.124.0/2283.103.0.0/18185.169.186.0/24185.139.48.0/2489.43.192.0/2485.18.0.0/1781.208.0.0/18151.0.128.0/1793.44.0.0/1585.18.0.0/1645.90.124.0/2493.39.0.0/16193.27.28.0/2292.242.172.0/2285.118.144.0/23213.156.32.0/2093.42.0.0/16194.63.146.0/2493.37.0.0/17194.5.146.0/24193.42.234.0/2493.48.0.0/1393.60.0.0/1523.61.204.0/2493.37.128.0/17193.42.238.0/2445.82.228.0/22185.219.234.0/24213.140.0.0/202.19.179.0/2480.67.66.0/2464.126.250.0/2431.131.240.0/21185.169.185.0/2493.42.0.0/1583.103.64.0/18185.219.180.0/2293.33.0.0/1693.32.0.0/13185.36.72.0/22185.27.73.0/24185.22.85.0/2493.62.0.0/1562.177.0.0/2093.41.0.0/1693.34.0.0/1593.40.0.0/14194.99.35.0/2493.40.0.0/13176.122.198.0/24213.140.16.0/2093.36.0.0/155.152.240.0/2193.40.192.0/1893.56.0.0/1493.32.0.0/1293.40.0.0/1593.46.0.0/152.16.17.0/2493.44.0.0/145.1.44.0/2489.97.0.0/16185.190.214.0/24193.169.20.0/24194.59.208.0/2237.153.135.0/2493.32.0.0/14185.22.84.0/24185.219.232.0/24193.3.50.0/24170.248.136.0/24185.27.72.0/24193.193.0.0/1993.36.0.0/14158.255.240.0/2137.99.240.0/24185.190.215.0/2437.186.192.0/1893.40.128.0/1893.38.0.0/15185.43.19.0/24185.139.49.0/2489.96.0.0/1584.53.184.0/2492.223.128.0/1762.182.103.0/24176.122.196.0/23
IPv6 prefixes (18)
2001:b07:5000::/362001:b07:c000::/362001:b07:2000::/362001:b07:d000::/362001:b07:3000::/362001:b07::/322001:b07:f000::/362001:b07:b000::/362001:b07::/362001:b07:7000::/362001:b07:6000::/362001:b07:a000::/362001:b07:1000::/362001:b07:e000::/362001:b07:8000::/362001:b07:9000::/362001:b00::/292001:b07:4000::/36
RPKI-validate all prefixes of AS12874
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | FASTWEB-MNT | FASTWEB-MNT | ||
| administrative, technical | ip registration service | IRS2-RIPE | +39 02 45451, +39 02 45451 | Via Caracciolo, 51, 20155 Milano MI, Italy |
| registrant | Fastweb SpA | ORG-FA7-RIPE | +390245451, +390245454811 | Piazza Adriano Olivetti, 1, 20139, Milano, ITALY |
| registrant | RIPE-NCC-END-MNT | RIPE-NCC-END-MNT | ||
| abuse | Fastweb Abuse | FA5264-RIPE | [email protected], +39 02 45451, +39 02 45451 | Via Caracciolo, 51, 20155 Milano MI, Italy |
| registrant | FASTWEB-MNT | FASTWEB-MNT |
Raw registry response
{
"handle": "AS12874",
"startAutnum": 12874,
"endAutnum": 12874,
"name": "FASTWEB",
"status": [
"active"
],
"entities": [
{
"handle": "FASTWEB-MNT",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"FASTWEB-MNT"
],
[
"kind",
[],
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/FASTWEB-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "IRS2-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"ip registration service"
],
[
"kind",
[],
"text",
"individual"
],
[
"adr",
{
"label": "Via Caracciolo, 51\n20155 Milano MI\nItaly"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+39 02 45451"
],
[
"tel",
{
"type": "fax"
},
"text",
"+39 02 45451"
]
]
],
"roles": [
"administrative",
"technical"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/IRS2-RIPE"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "ORG-FA7-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Fastweb SpA"
],
[
"kind",
[],
"text",
"org"
],
[
"adr",
{
"label": "Piazza Adriano Olivetti, 1\n20139\nMilano\nITALY"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+390245451"
],
[
"tel",
{
"type": "fax"
},
"text",
"+390245454811"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/ORG-FA7-RIPE"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "RIPE-NCC-END-MNT",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"RIPE-NCC-END-MNT"
],
[
"kind",
[],
"text",
"individual"
],
[
"org",
[],
"text",
"ORG-NCC1-RIPE"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/RIPE-NCC-END-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "FA5264-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Fastweb Abuse"
],
[
"kind",
[],
"text",
"group"
],
[
"adr",
{
"label": "Via Caracciolo, 51\n20155 Milano MI\nItaly"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+39 02 45451"
],
[
"tel",
{
"type": "fax"
},
"text",
"+39 02 45451"
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
],
"roles": [
"abuse"
],
"entities": [
{
"handle": "FASTWEB-MNT",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"FASTWEB-MNT"
],
[
"kind",
[],
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/FASTWEB-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
}
],
"objectClassName": "entity"
}
],
"remarks": [
{
"description": [
"Fastweb Autonomous System",
"Milano - Italy",
"---------------------------------------------------------------------",
"",
"COMMUNITY SUPPORT",
"NAP",
"12874:300 not announce to all NAP",
"12874:301 as-path prepend 1x12874 to all NAP",
"12874:302 as-path prepend 2x12874 to all NAP",
"12874:303 as-path prepend 3x12874 to all NAP",
"12874:304 not announce to MIX-IT",
"12874:305 as-path prepend 1x12874 to MIX-IT",
"12874:306 as-path prepend 2x12874 to MIX-IT",
"12874:307 as-path prepend 3x12874 to MIX-IT",
"12874:308 not announce to NAMEX",
"12874:309 as-path prepend 1x12874 to NAMEX",
"12874:310 as-path prepend 2x12874 to NAMEX",
"12874:311 as-path prepend 3x12874 to NAMEX",
"12874:312 not announce to TOPIX",
"12874:313 as-path prepend 1x12874 to TOPIX",
"12874:314 as-path prepend 2x12874 to TOPIX",
"12874:315 as-path prepend 3x12874 to TOPIX",
"12874:316 not announce to TIX",
"12874:317 as-path prepend 1x12874 to TIX",
"12874:318 as-path prepend 2x12874 to TIX",
"12874:319 as-path prepend 3x12874 to TIX",
"12874:320 not announce to VSIX",
"12874:321 as-path prepend 1x12874 to VSIX",
"12874:322 as-path prepend 2x12874 to VSIX",
"12874:323 as-path prepend 3x12874 to VSIX",
"12874:324 not announce to DECIX",
"12874:325 as-path prepend 1x12874 to DECIX",
"12874:326 as-path prepend 2x12874 to DECIX",
"12874:327 as-path prepend 3x12874 to DECIX",
"12874:328 not announce to AMSIX",
"12874:329 as-path prepend 1x12874 to AMSIX",
"12874:330 as-path prepend 2x12874 to AMSIX",
"12874:331 as-path prepend 3x12874 to AMSIX",
"12874:332 not announce to LINX",
"12874:333 as-path prepend 1x12874 to LINX",
"12874:334 as-path prepend 2x12874 to LINX",
"12874:335 as-path prepend 3x12874 to LINX",
"12874:336 not announce to MINAP",
"12874:337 as-path prepend 1x12874 to MINAP",
"12874:338 as-path prepend 2x12874 to MINAP",
"12874:339 as-path prepend 3x12874 to MINAP",
"12874:340 not announce to EQUINIX",
"12874:341 as-path prepend 1x12874 to EQUINIX",
"12874:342 as-path prepend 2x12874 to EQUINIX",
"12874:343 as-path prepend 3x12874 to EQUINIX",
"12874:344 not announce to GEDIX",
"12874:345 as-path prepend 1x12874 to GEDIX",
"12874:346 as-path prepend 2x12874 to GEDIX",
"12874:347 as-path prepend 3x12874 to GEDIX",
"PEERING",
"12874:400 not announce to all PEERING",
"12874:401 as-path prepend 1x12874 to all PEERING",
"12874:402 as-path prepend 2x12874 to all PEERING",
"12874:403 as-path prepend 3x12874 to all PEERING",
"12874:404 not announce to GOOGLE",
"12874:405 as-path prepend 1x12874 to GOOGLE",
"12874:406 as-path prepend 2x12874 to GOOGLE",
"12874:407 as-path prepend 3x12874 to GOOGLE",
"12874:408 not announce to FACEBOOK",
"12874:409 as-path prepend 1x12874 to FACEBOOK",
"12874:410 as-path prepend 2x12874 to FACEBOOK",
"12874:411 as-path prepend 3x12874 to FACEBOOK",
"12874:412 not announce to AKAMAI",
"12874:413 as-path prepend 1x12874 to AKAMAI",
"12874:414 as-path prepend 2x12874 to AKAMAI",
"12874:415 as-path prepend 3x12874 to AKAMAI",
"12874:416 not announce to WIND",
"12874:417 as-path prepend 1x12874 to WIND",
"12874:418 as-path prepend 2x12874 to WIND",
"12874:419 as-path prepend 3x12874 to WIND",
"12874:420 not announce to INTERBUSINESS",
"12874:421 as-path prepend 1x12874 to INTERBUSINESS",
"12874:422 as-path prepend 2x12874 to INTERBUSINESS",
"12874:423 as-path prepend 3x12874 to INTERBUSINESS",
"12874:428 not announce to MICROSOFT",
"12874:429 as-path prepend 1x12874 to MICROSOFT",
"12874:430 as-path prepend 2x12874 to MICROSOFT",
"12874:431 as-path prepend 3x12874 to MICROSOFT",
"12874:432 not announce to AMAZON",
"12874:433 as-path prepend 1x12874 to AMAZON",
"12874:434 as-path prepend 2x12874 to AMAZON",
"12874:435 as-path prepend 3x12874 to AMAZON",
"12874:436 not announce to VERIZON",
"12874:437 as-path prepend 1x12874 to VERIZON",
"12874:438 as-path prepend 2x12874 to VERIZON",
"12874:439 as-path prepend 3x12874 to VERIZON",
"12874:436 not announce to TWITCH",
"12874:437 as-path prepend 1x12874 to TWITCH",
"12874:438 as-path prepend 2x12874 to TWITCH",
"12874:439 as-path prepend 3x12874 to TWITCH",
"12874:444 not announce to CDN77",
"12874:445 as-path prepend 1x12874 to CDN77",
"12874:446 as-path prepend 2x12874 to CDN77",
"12874:447 as-path prepend 3x12874 to CDN77",
"12874:448 not announce to LIMELIGHT",
"12874:449 as-path prepend 1x12874 to LIMEGLIGHT",
"12874:450 as-path prepend 2x12874 to LIMEGLIGHT",
"12874:451 as-path prepend 3x12874 to LIMEGLIGHT",
"TRANSIT",
"12874:500 not announce to all TRANSIT",
"12874:501 as-path prepend 1x12874 to all TRANSIT",
"12874:502 as-path prepend 2x12874 to all TRANSIT",
"12874:503 as-path prepend 3x12874 to all TRANSIT",
"12874:504 not announce to AS3303",
"12874:505 as-path prepend 1x12874 to AS3303",
"12874:506 as-path prepend 2x12874 to AS3303",
"12874:507 as-path prepend 3x12874 to AS3303",
"12874:508 not announce to AS6762",
"12874:509 as-path prepend 1x12874 to AS6762",
"12874:510 as-path prepend 2x12874 to AS6762",
"12874:511 as-path prepend 3x12874 to AS6762",
"12874:512 not announce to AS3356",
"12874:513 as-path prepend 1x12874 to AS3356",
"12874:514 as-path prepend 2x12874 to AS3356",
"12874:515 as-path prepend 3x12874 to AS3356",
"12874:516 not announce to AS1299",
"12874:517 as-path prepend 1x12874 to AS1299",
"12874:518 as-path prepend 2x12874 to AS1299",
"12874:519 as-path prepend 3x12874 to AS1299"
]
}
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "rdap-up",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS12874",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "rdap-up rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS12874?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "rdap-down",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-down/AS12874",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "rdap-top",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS12874",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "rdap-top rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS12874?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "rdap-bottom",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-bottom/AS12874",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/12874",
"rel": "self",
"href": "https://rdap.db.ripe.net/autnum/12874",
"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": "2002-09-13T16:27:20Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-10-06T13:29:32Z"
}
],
"rdapConformance": [
"nro_rdap_profile_asn_flat_0",
"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/12874",
"rel": "inaccuracy-report",
"href": "https://www.ripe.net/contact-form?topic=ripe_dbm&show_form=true",
"type": "text/html"
}
]
},
{
"title": "Source",
"description": [
"Objects returned came from source",
"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/12874",
"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": "$.entities[?(@.handle=='IRS2-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='ORG-FA7-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='FA5264-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
}
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.