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AS237

83 IPv4 prefixes 9 IPv6 prefixes
IPv4 addresses
2,221,568
IPv6 /48 networks
131,091
RPKI
59 valid33 no ROA
Peers and downstreams
36

Holder

AS name
Organisation
Not published
Abuse contact
Not published
Registered
1988-09-12
Record last changed
2026-09-21 18:13 UTC
141.210.0.0/16141.210.0.0/17141.210.128.0/17141.210.224.0/19141.210.32.0/19141.217.0.0/16141.218.0.0/16141.218.11.0/24141.218.203.0/24141.218.204.0/22141.218.208.0/20141.218.224.0/22141.218.228.0/23148.61.0.0/16161.133.0.0/17161.133.104.0/21161.133.112.0/21161.133.120.0/21161.133.128.0/17161.133.129.0/24161.133.2.0/24163.253.36.0/22164.76.0.0/16164.76.160.0/19192.122.182.0/23192.122.184.0/21192.122.200.0/24192.138.137.0/24192.160.192.0/24192.160.204.0/24192.188.100.0/24192.203.195.0/24192.245.252.0/24192.245.254.0/24192.35.170.0/24192.41.229.0/24192.41.232.0/22192.88.242.0/24198.108.0.0/14198.17.130.0/23198.17.132.0/23204.38.0.0/16204.39.195.0/24206.201.157.0/24207.72.0.0/14207.75.164.0/2323.135.208.0/2435.16.0.0/1635.24.0.0/1735.24.128.0/1835.24.192.0/1935.24.224.0/1935.25.0.0/1635.33.0.0/1835.33.5.0/2435.33.6.0/2435.33.96.0/1935.34.0.0/1835.37.0.0/1635.38.0.0/1635.39.0.0/1935.39.128.0/1935.39.160.0/1935.39.192.0/1935.39.224.0/1935.39.32.0/1935.39.64.0/1935.40.0.0/1635.46.0.0/1835.46.64.0/1835.50.0.0/1735.50.0.0/1835.50.64.0/1835.58.0.0/1635.62.0.0/1635.63.0.0/1635.64.0.0/1435.68.0.0/1535.70.0.0/1635.71.0.0/1874.115.236.0/2374.115.236.0/2474.115.237.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths
AS6057 Administracion Nacional de Telecomunicaciones AS6057 · UY Administracion Nacion… AS14840 BR.Digital Telecom AS14840 · BR BR.Digital Telecom AS3356 Level 3 Parent, LLC AS3356 · US Level 3 Parent, LLC AS6461 Zayo Bandwidth AS6461 · US Zayo Bandwidth AS35280 F5 Networks SARL AS35280 · FR F5 Networks SARL AS25091 IP-Max SA AS25091 · CH IP-Max SA AS24482 SG.GS AS24482 · SG SG.GS AS34019 Hivane Association AS34019 · FR Hivane Association AS8758 Iway AG AS8758 · CH Iway AG AS6939 Hurricane Electric LLC AS6939 · US Hurricane Electric LLC AS174 AS174 AS174 AS174 AS1299 Arelion Sweden AB AS1299 · SE Arelion Sweden AB AS7018 AT&T Enterprises, LLC AS7018 · US AT&T Enterprises, LLC AS2914 NTT America, Inc. AS2914 · US NTT America, Inc. AS3303 Swisscom (Schweiz) AG AS3303 · CH Swisscom (Schweiz) AG AS293 AS293 AS293 · US AS293 AS11164 Internet2 AS11164 · US Internet2 AS11537 Internet2 AS11537 · US Internet2 AS237 AS237 AS237 AS237

Network health

Grade C · 66/100
partly Prefixes covered by valid ROAs
59 of 92 announced prefixes are RPKI valid, 33 have no ROA.		 16/25
pass No RPKI invalid announcements
None of the announcements is RPKI invalid.		 10/10
pass Announces IPv6
9 IPv6 prefixes.		 15/15
pass More than one upstream
9 upstreams seen in BGP.		 10/10
fail Working abuse contact
No abuse contact is published in the registry.		 0/15
fail Publishes a geofeed
No geofeed found. Without one, location databases have to guess.		 0/10
pass No prefixes smaller than /24 or /48
All prefixes are /24 (IPv4) or /48 (IPv6) or larger.		 10/10
pass Registry record maintained
Last changed 2026-09-21.		 5/5
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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Routing changes

Last 30 days
No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS237
as-name:        MERIT-AS-14
handle:         AS237
remarks:        Primary Merit Network ASN
registrant:     MICH-Z (Merit Network Inc.)
last changed:   2026-09-21T14:13:45-04:00
registration:   1988-09-12T00:00:00-04:00
source:         ARIN (RDAP)