HomeASN LookupAS237

AS237 MERIT-AS-14 - Merit Network Inc.

🇺🇸
ARINassigned
Announced Prefixes (BGP)
93total
84 IPv49 IPv6
IPv4 Addresses
Allocated (RIR)1.7M
Announced (BGP)2.4M
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)1.5×10²⁹
Prefix Limit (IPv4)
2,000
Prefix Limit (IPv6)
50
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
1988-09-12

Routing hygiene

Score 17/100 · Low risk
RPKI ROA coverage
63.4%
1 prefix RPKI invalid
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
4
diversity 54/100
  • 37% of announced prefixes (34 of 93) have no valid ROA, 1 of them RPKI invalid

Based on 93 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained

Announced Prefixes

(BGP)93
|
Prefix
RPKI
IRR
Last Seen
23.135.208.0/24MOAS
No ROA
Other IRR
2026-10-27
35.16.0.0/16
 Valid
Other IRR
2026-10-27
35.24.0.0/17
 Valid
Other IRR
2026-10-27
35.24.128.0/18
 Valid
Other IRR
2026-10-27
35.24.192.0/19
 Valid
Other IRR
2026-10-27
35.24.224.0/19
 Valid
Other IRR
2026-10-27
35.25.0.0/16
 Valid
Other IRR
2026-10-27
35.33.0.0/18
 Valid
Other IRR
2026-10-27
35.33.5.0/24
 Valid
Other IRR
2026-10-27
35.33.6.0/24
 Valid
Other IRR
2026-10-27
1-10 of 93
1 / 10

Allocated Prefixes

(RIR)34
Prefix
Country
RIR
Status
35.16.0.0/16🇺🇸 USARINallocated
35.34.0.0/18🇺🇸 USARINallocated
35.37.0.0/16🇺🇸 USARINallocated
35.38.0.0/16🇺🇸 USARINallocated
35.39.64.0/19🇺🇸 USARINallocated
35.40.0.0/16🇺🇸 USARINallocated
35.50.0.0/17🇺🇸 USARINallocated
35.64.0.0/14🇺🇸 USARINallocated
35.68.0.0/15🇺🇸 USARINallocated
35.70.0.0/16🇺🇸 USARINallocated
1-10 of 34
1 / 4

All 93 announced prefixes of AS237 →

Downstream Customers(1)

ASNName
AS397546🇺🇸GAMERS-OUTREACH-AS - Gamers Outreach

BGP Neighbours

(seen in AS paths)

Upstreams (5)

Networks AS237 hands its own prefixes to: transit providers, or peers at an exchange.

  • AS174Cogent Communications45
  • AS1299TWELVE99 Arelion Sweden AB44
  • AS11537Internet22
  • AS2914NTT America1
  • AS49544I3Dnet I3D.Net B.V1

Downstreams (28)

Networks whose own prefixes AS237 passes on: usually its customers.

  • AS400238PIE&G42
  • AS11206Ferris State University33
  • AS36375University Of Michigan24
  • AS231Michigan State University7
  • AS25609Detroit Medical Center5
  • AS27274Central Michigan University4
  • AS62618Michigan Technological University3
  • AS394769University Of Michigan Flint3
  • AS395945Holland Board Of Public Works3
  • AS177University Of Michigan2
  • AS229Merit Network2
  • AS1432Albion College2
  • AS1638Mott Community College2
  • AS14924Merit Network2
  • AS53263Grand Rapids Community College2
  • AS62676University Of Michigan Dearborn2
  • AS396470Lansing Community College2
  • AS11494Kellogg Community College1
  • AS19106Andrews University1
  • AS22217Calvin College1
  • AS26174Saginaw Valley State University1
  • AS32285Henry Ford College1
  • AS40044Bronson Healthcare Group1
  • AS46241Washtenaw ISD1
  • AS46825Coldwater Board Of Public Utilities1
  • AS393817Lake Michigan College1
  • AS400927Barger Creek Wireless1
  • AS402639Washtenaw1

Other adjacent networks (2)

Adjacent to AS237 in the transit part of AS paths: peers, providers or customers.

ASPA
No ASPA0 upstreams, 1 downstream
Listed as Upstream Provider by
1 ASN
View full ASPA details →
External Links
ARIN WhoisRIPEstat

Learn more

API
Open
GEThttps://api.ipctl.io/v1/asn/237

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/237" | jq