ResearchRouting table, RPKI, IRR & looking glass

AS237 Merit Network Inc.

AS237 (MERIT-AS-14) is registered to Merit Network Inc. in US, through ARIN. It originates 91 prefixes in the global routing table.

82
IPv4 prefixes
9
IPv6 prefixes
2,221,312
IPv4 addresses
64%
RPKI valid

Who holds AS237

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS237
Handle
MERIT-AS-14
Organization
Merit Network Inc.
Country
US
Registry
ARIN
ASPA
None published
WHOIS recordARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       237
ASName:         MERIT-AS-14
ASHandle:       AS237
RegDate:        1988-09-12
Updated:        2026-09-21
Comment:        Primary Merit Network ASN
Ref:            https://rdap.arin.net/registry/autnum/237


OrgName:        Merit Network Inc.
OrgId:          MICH-Z
Address:        880 Technology Dr., Suite B
City:           Ann Arbor
StateProv:      MI
PostalCode:     48108
Country:        US
RegDate:        2009-12-08
Updated:        2020-04-21
Ref:            https://rdap.arin.net/registry/entity/MICH-Z


OrgTechHandle: MERIT-ARIN
OrgTechName:   Merit Operations
OrgTechPhone:  +1-734-527-5717 
OrgTechEmail:  operations@merit.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/MERIT-ARIN

OrgAbuseHandle: NETWO26-ARIN
OrgAbuseName:   Network Abuse
OrgAbusePhone:  +1-734-527-5740 
OrgAbuseEmail:  abuse@merit.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO26-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

What AS237 announces

Prefixes originated by AS237 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
82
IPv6 prefixes
9
IPv4 addresses
2,221,312 (8,677 /24s)
RPKI valid
59 64%
RPKI invalid
0
RPKI not found
32
ROAs naming AS237
68
With an IRR route object
69 75%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

Who AS237 is reached through

The AS just before AS237 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Provider authorization

AS237 publishes no ASPA of its own. 1 AS name it as a provider in theirs. Check a path.

The 1 ASes that name AS237 as a provider

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.