Organization
Dennis Group
DENNIS-GROUP
Registered
Jul 26, 2024
2 years ago
IPv4 Prefixes
6
1,280 addresses
IPv6 Prefixes
3
256 × /48
BGP Neighbours
5
5 upstream/peer · 0 downstream
Registration
AS Number AS33741 AS Name DENNIS-GROUP Organization Dennis Group Organization ID DEGL-2 Address 1537 Main Street, Springfield, MA, 01103, United States Country United States (US) Registry ARIN Allocated Jul 26, 2024 Record Created Jul 26, 2024 Last Updated Jul 26, 2024 Status
active
WHOIS Server whois.arin.net AS Description DENNIS-GROUP - Dennis Group, US Remarks https://dennisgroup.com Abuse Email [email protected] Abuse Phone +1-413-787-1785 IPv4 Prefixes
6 prefixes · 1,280 addresses · 2 top-level Routing data as of 2026-10-09 08:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 23.184.184.0/24 | 23.184.184.0 – 23.184.184.255 | 256 |
| 142.249.168.0/22 | 142.249.168.0 – 142.249.171.255 | 1,024 |
| 142.249.168.0/24 | 142.249.168.0 – 142.249.168.255 | 256 |
| 142.249.169.0/24 | 142.249.169.0 – 142.249.169.255 | 256 |
| 142.249.170.0/24 | 142.249.170.0 – 142.249.170.255 | 256 |
| 142.249.171.0/24 | 142.249.171.0 – 142.249.171.255 | 256 |
IPv6 Prefixes
3 prefixes · 256 × /48 · 1 top-level Routing data as of 2026-10-09 08:00 UTC
| Prefix | Addresses |
|---|---|
| 2602:819:a000:: | 288 |
| 2602:819:a040:: | 282 |
| 2602:819:a060:: | 284 |
BGP Neighbours
5 unique neighbours · 5 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 (5)
AS Name AS paths IPv4 sightings IPv6 sightings AS812 ROGERS-COMMUNICATIONS - Rogers Communications Canada Inc. 475 729 665 AS7725 COMCAST-7725 - Comcast Cable Communications, LLC 343 357 339 AS7015 COMCAST-7015 - Comcast Cable Communications, LLC 260 392 0 AS33660 CMCS - Comcast Cable Communications, LLC 257 347 0 AS577 BACOM - Bell Canada 177 190 61
Raw RDAP Response
{
"endAutnum": 33741,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-02T09:38:35-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-12-19T07:33:35-05:00"
}
],
"handle": "DGITD-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DGITD-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33741"
},
{
"href": "https://whois.arin.net/rest/poc/DGITD-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33741"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"https://www.dennisgroup.com",
"Standard NOC hours are 8:00 AM to 7:00 PM EST Mon-Fri, excluding holidays."
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"routing",
"technical",
"abuse",
"dns",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1537 Main Street\nSpringfield\nMA\n01103\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Dennis Group Information Technology Department"
],
[
"org",
{},
"text",
"Dennis Group"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-413-787-1785"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-02-26T10:39:45-05:00"
},
{
"eventAction": "registration",
"eventDate": "2024-06-06T08:34:10-04:00"
}
],
"handle": "DEGL-2",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DEGL-2",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33741"
},
{
"href": "https://whois.arin.net/rest/org/DEGL-2",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33741"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"https://www.dennisgroup.com"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Dennis Group"
],
[
"adr",
{
"label": "1537 Main Street\nSpringfield\nMA\n01103\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-07-26T13:19:56-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-07-26T13:19:56-04:00"
}
],
"handle": "AS33741",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/33741",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/33741"
},
{
"href": "https://whois.arin.net/rest/asn/AS33741",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/33741"
}
],
"name": "DENNIS-GROUP",
"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/33741"
}
],
"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/33741"
}
],
"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"
],
"remarks": [
{
"description": [
"https://dennisgroup.com"
],
"title": "Registration Comments"
}
],
"startAutnum": 33741,
"status": [
"active"
]
} Contact details of private individuals are redacted.