$ query “AS237” --type=asn → 1 result(s)

AS237 · MERIT-AS-14

Merit Network Inc.

AS237 is owned by Merit Network Inc. and is a mid-size transit provider, registered in the United States since 1988. The system announces an impressive 2.2 million IPv4 addresses, including a /14, and supports IPv6. The bulk of its IP address space is in the United States, with additional presence in Australia.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇺🇸 United States
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
September 12, 1988
Last Changed
March 04, 2026
Last Seen
April 14, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
83 / 49
IPv6 Prefixes (raw / aggregated)
9 / 6
IPv4 Addresses
2 221 568
Largest IPv4 Prefix
/14 (262 144 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (2 258 688 IPs), 🇦🇺 Australia (683 264 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 1 flagged IPs out of 2 221 568 total (0.00%)
Open Proxies
1 known open proxies in this network

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
10 networks exchanging traffic without transit
Downstream Customers
28 downstreams buying transit
Unclassified
2 unclassified BGP neighbors
Degree
45 unique BGP neighbors
Reach
28 networks in customer cone

Upstream Providers (5)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS11164 — INTERNET2-I2PX (Tier-1 transit)
  • AS11537 — INTERNET2-RESEARCH-EDU

Prefix Lists

IPv4 Prefixes (83 total)

  • 207.72.0.0/14 (262 144 addresses (/14 prefix))
  • 35.64.0.0/14 (262 144 addresses (/14 prefix))
  • 198.108.0.0/14 (262 144 addresses (/14 prefix))
  • 35.62.0.0/15 (131 072 addresses (/15 prefix))
  • 35.68.0.0/15 (131 072 addresses (/15 prefix))
  • 35.24.0.0/15 (131 072 addresses (/15 prefix))
  • 164.76.0.0/16 (65 536 addresses (/16 prefix))
  • 35.38.0.0/16 (65 536 addresses (/16 prefix))
  • 141.210.0.0/16 (65 536 addresses (/16 prefix))
  • 161.133.0.0/16 (65 536 addresses (/16 prefix))
  • 148.61.0.0/16 (65 536 addresses (/16 prefix))
  • 35.40.0.0/16 (65 536 addresses (/16 prefix))
  • 141.218.0.0/16 (65 536 addresses (/16 prefix))
  • 141.217.0.0/16 (65 536 addresses (/16 prefix))
  • 35.58.0.0/16 (65 536 addresses (/16 prefix))
  • 35.37.0.0/16 (65 536 addresses (/16 prefix))
  • 204.38.0.0/16 (65 536 addresses (/16 prefix))
  • 35.16.0.0/16 (65 536 addresses (/16 prefix))
  • 35.70.0.0/16 (65 536 addresses (/16 prefix))
  • 35.46.0.0/17 (32 768 addresses (/17 prefix))
  • 35.50.0.0/17 (32 768 addresses (/17 prefix))
  • 35.39.128.0/17 (32 768 addresses (/17 prefix))
  • 35.34.0.0/18 (16 384 addresses (/18 prefix))
  • 35.33.0.0/18 (16 384 addresses (/18 prefix))
  • 35.71.0.0/18 (16 384 addresses (/18 prefix))
  • 35.39.0.0/18 (16 384 addresses (/18 prefix))
  • 35.39.64.0/19 (8 192 addresses (/19 prefix))
  • 35.33.96.0/19 (8 192 addresses (/19 prefix))
  • 192.122.184.0/21 (2 048 addresses (/21 prefix))
  • 163.253.36.0/22 (1 024 addresses (/22 prefix))
  • 192.41.232.0/22 (1 024 addresses (/22 prefix))
  • 198.17.130.0/23 (512 addresses (/23 prefix))
  • 198.17.132.0/23 (512 addresses (/23 prefix))
  • 192.122.182.0/23 (512 addresses (/23 prefix))
  • 74.115.236.0/23 (512 addresses (/23 prefix))
  • 192.122.200.0/24 (256 addresses (/24 prefix))
  • 192.160.192.0/24 (256 addresses (/24 prefix))
  • 192.160.204.0/24 (256 addresses (/24 prefix))
  • 192.188.100.0/24 (256 addresses (/24 prefix))
  • 192.203.195.0/24 (256 addresses (/24 prefix))
  • 192.245.252.0/24 (256 addresses (/24 prefix))
  • 192.245.254.0/24 (256 addresses (/24 prefix))
  • 192.138.137.0/24 (256 addresses (/24 prefix))
  • 192.88.242.0/24 (256 addresses (/24 prefix))
  • 192.41.229.0/24 (256 addresses (/24 prefix))
  • 192.35.170.0/24 (256 addresses (/24 prefix))
  • 204.39.195.0/24 (256 addresses (/24 prefix))
  • 206.201.157.0/24 (256 addresses (/24 prefix))
  • 23.135.208.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (9 total)

  • 2001:48a8::/32
  • 2606:9700::/32
  • 2620:13f:6000::/44
  • 2001:468:2620::/48
  • 2001:468:26e1::/48
  • 2607:ff30:1110::/48