Organization
Verizon Business
MCI-ASN
Registered
Jan 06, 1994
32 years ago
IPv4 Prefixes
38
71,936 addresses
IPv6 Prefixes
0
BGP Neighbours
4
1 upstream/peer · 3 downstream
Registration
AS Number AS3378 Registered Block AS3369 – AS3378 AS Name MCI-ASN Handle AS3369 Organization Verizon Business Organization ID MCICS Address 22001 Loudoun County Pkwy, Ashburn, VA, 20147, United States Country United States (US) Registry ARIN Allocated Jan 06, 1994 Record Created Jan 06, 1994 Last Updated Jul 02, 2024 Status
active
WHOIS Server whois.arin.net AS Description MCI-ASN - Verizon Business, US Abuse Email [email protected] Abuse Phone +1-800-900-0241 IPv4 Prefixes
38 prefixes · 71,936 addresses · 31 top-level Routing data as of 2026-10-09 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 142.77.1.0/24 | 142.77.1.0 – 142.77.1.255 | 256 |
| 142.77.8.0/22 | 142.77.8.0 – 142.77.11.255 | 1,024 |
| 142.77.14.0/24 | 142.77.14.0 – 142.77.14.255 | 256 |
| 142.77.32.0/24 | 142.77.32.0 – 142.77.32.255 | 256 |
| 142.77.46.0/24 | 142.77.46.0 – 142.77.46.255 | 256 |
| 142.77.72.0/21 | 142.77.72.0 – 142.77.79.255 | 2,048 |
| 142.77.80.0/20 | 142.77.80.0 – 142.77.95.255 | 4,096 |
| 146.1.1.0/24 | 146.1.1.0 – 146.1.1.255 | 256 |
| 146.1.2.0/24 | 146.1.2.0 – 146.1.2.255 | 256 |
| 146.1.4.0/23 | 146.1.4.0 – 146.1.5.255 | 512 |
| 146.1.6.0/24 | 146.1.6.0 – 146.1.6.255 | 256 |
| 146.1.16.0/23 | 146.1.16.0 – 146.1.17.255 | 512 |
| 146.1.24.0/21 | 146.1.24.0 – 146.1.31.255 | 2,048 |
| 146.1.40.0/21 | 146.1.40.0 – 146.1.47.255 | 2,048 |
| 146.1.192.0/19 | 146.1.192.0 – 146.1.223.255 | 8,192 |
| 159.24.64.0/20 | 159.24.64.0 – 159.24.79.255 | 4,096 |
| 159.98.72.0/21 | 159.98.72.0 – 159.98.79.255 | 2,048 |
| 159.98.104.0/21 | 159.98.104.0 – 159.98.111.255 | 2,048 |
| 159.98.112.0/22 | 159.98.112.0 – 159.98.115.255 | 1,024 |
| 162.47.128.0/20 | 162.47.128.0 – 162.47.143.255 | 4,096 |
| 162.47.144.0/23 | 162.47.144.0 – 162.47.145.255 | 512 |
| 162.47.146.0/23 | 162.47.146.0 – 162.47.147.255 | 512 |
| 165.122.128.0/20 | 165.122.128.0 – 165.122.143.255 | 4,096 |
| 166.34.64.0/18 | 166.34.64.0 – 166.34.127.255 | 16,384 |
| 166.38.96.0/19 | 166.38.96.0 – 166.38.127.255 | 8,192 |
| 166.38.132.0/23 | 166.38.132.0 – 166.38.133.255 | 512 |
| 166.38.136.0/23 | 166.38.136.0 – 166.38.137.255 | 512 |
| 198.168.54.0/24 | 198.168.54.0 – 198.168.54.255 | 256 |
| 198.168.73.0/24 | 198.168.73.0 – 198.168.73.255 | 256 |
| 199.249.16.0/20 | 199.249.16.0 – 199.249.31.255 | 4,096 |
| 199.249.18.0/24 | 199.249.18.0 – 199.249.18.255 | 256 |
| 199.249.19.0/24 | 199.249.19.0 – 199.249.19.255 | 256 |
| 199.249.20.0/24 | 199.249.20.0 – 199.249.20.255 | 256 |
| 199.249.21.0/24 | 199.249.21.0 – 199.249.21.255 | 256 |
| 199.249.22.0/24 | 199.249.22.0 – 199.249.22.255 | 256 |
| 199.249.23.0/24 | 199.249.23.0 – 199.249.23.255 | 256 |
| 199.249.29.0/24 | 199.249.29.0 – 199.249.29.255 | 256 |
| 205.150.160.0/22 | 205.150.160.0 – 205.150.163.255 | 1,024 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
4 unique neighbours · 1 upstream/peer · 3 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. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Upstream & peer side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS701 UUNET - Verizon Business 4,118 67,815 1,324 Downstream side (3)
Raw RDAP Response
{
"endAutnum": 3378,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-27T09:05:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-08-18T13:07:50-04:00"
}
],
"handle": "ABUSE5603-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE5603-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE5603-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "22001 Loudoun County Parkway\nAsburn\nVA\n20147\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Abuse"
],
[
"org",
{},
"text",
"Verizon"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-900-0241"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-10T14:28:23-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-07-18T11:57:46-04:00"
}
],
"handle": "IPADM314-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IPADM314-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/poc/IPADM314-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"This POC is for Frontier IP management use only.",
"Frontier Referral Server: rwhois://rwhois.frontiernet.net:4321",
"",
"Abuse issues must be sent to abuse email at [email protected] or through ABUSE3-ARIN.",
"",
"Requests for Subscriber Internet Records (information on a Frontier IP Address or Email Address), Telephone Records, Trap and Trace, etc. must be sent to Security Operations.",
"",
"Security Operations",
"Frontier Communications Corporation",
"1800 41st St, Suite N-100",
"Everett, WA 98203",
"Tel: (888) 637-9625",
"Fax: (425) 258-9379",
"Email: [email protected]"
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "95 Fitzhugh St N\nRochester\nNY\n14614\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"ipadmin"
],
[
"org",
{},
"text",
"Frontier Communications"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-866-474-7662"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-23T15:20:23-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-11-06T17:57:04-05:00"
}
],
"handle": "VIS1-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/VIS1-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/poc/VIS1-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Admin Interaction email only. Does not handle Abuse or Security issues."
],
"title": "Registration Comments"
}
],
"roles": [
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1880 Campus Commons Dr\nReston\nVA\n20191\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Verizon Internet Services"
],
[
"org",
{},
"text",
"Verizon Internet Services"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-243-6994"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-15T17:11:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-10-10T16:20:39-04:00"
}
],
"handle": "VZDNS1-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/VZDNS1-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/poc/VZDNS1-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"We only manage Verizon's internal IT Reverse DNS Zones."
],
"title": "Registration Comments"
}
],
"roles": [
"dns"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "2785 Mitchell Dr.\nWalnut Creek\nCA\n94598\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"VZ-DNSADMIN"
],
[
"org",
{},
"text",
"Verizon"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-900-0241"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-27T09:05:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-08-24T08:09:34-04:00"
}
],
"handle": "ABUSE3-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE3-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Claims of copyright infringement: [email protected].",
"",
"Reports of child pornography: [email protected].",
"",
"Illegal use or network security issues: [email protected].",
"",
"SPAM or other email abuse: [email protected]. (Spam complaints must include full header information from the offending email.)",
"",
"Phishing or spoofing: [email protected].",
"",
"USENET abuse: [email protected]."
],
"title": "Registration Comments"
}
],
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "22001 Loudoun County Parkway\nAshburn\nVA\n20147\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"abuse"
],
[
"org",
{},
"text",
"WorldCom/UUNET Technologies, Inc."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-800-900-0241"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-01T10:52:57-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-05-30T14:02:27-04:00"
}
],
"handle": "MCICS",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MCICS",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/org/MCICS",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Verizon Business"
],
[
"adr",
{
"label": "22001 Loudoun County Pkwy\nAshburn\nVA\n20147\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-07-02T07:39:00-04:00"
},
{
"eventAction": "registration",
"eventDate": "1994-01-06T00:00:00-05:00"
}
],
"handle": "AS3369",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/3369",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/3378"
},
{
"href": "https://whois.arin.net/rest/asn/AS3369",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"name": "MCI-ASN",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/3378"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 3369,
"status": [
"active"
]
} Contact details of private individuals are redacted.