$ query “AS61574” --type=asn → 1 result(s)

AS61574 · PEERING-TESTBED-AS61574

Columbia/UFMG PEERING Research Testbed

AS61574 is run by Columbia/UFMG PEERING Research Testbed and is an educational/research stub network, established in Brazil in 2017. The system announces 768 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to Australia, with additional presence in the United States. This AS has recently updated its prefix announcements.

Basic Information

Country
🇧🇷 Brazil
Category
Education/Research
Network Role
Stub Network
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
November 16, 2017
Last Changed
September 03, 2026
Last Seen
September 05, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
3 / 2
IPv6 Prefixes (raw / aggregated)
98 / 50
IPv4 Addresses
768
Largest IPv4 Prefix
/23 (512 addresses)
Largest IPv6 Prefix
/45
Geolocated Countries
🇦🇺 Australia (512 IPs), 🇺🇸 United States (256 IPs)
Prefix Changed
September 04, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Unclassified
1 unclassified BGP neighbor
Degree
1 unique BGP neighbor
Reach
0 networks in customer cone

Prefix Lists

IPv4 Prefixes (3 total)

  • 138.185.230.0/23 (512 addresses (/23 prefix))
  • 204.9.170.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (98 total)

  • 2804:269c:fe68::/45
  • 2804:269c:fe58::/45
  • 2804:269c:fe98::/45
  • 2804:269c:fea8::/45
  • 2804:269c:fe70::/46
  • 2804:269c:feb0::/46
  • 2804:269c:fe64::/46
  • 2804:269c:fea4::/46
  • 2804:269c:feb4::/47
  • 2804:269c:fe60::/47
  • 2804:269c:fee6::/47
  • 2804:269c:fe50::/47
  • 2804:269c:fee0::/47
  • 2804:269c:fe44::/47
  • 2804:269c:fe74::/47
  • 2804:269c:fea0::/47
  • 2804:269c:fe93::/48
  • 2804:269c:feb6::/48
  • 2804:269c:fe81::/48
  • 2804:269c:fe82::/48
  • 2804:269c:fe85::/48
  • 2804:269c:fe87::/48
  • 2804:269c:fe89::/48
  • 2804:269c:fe90::/48
  • 2804:269c:fe41::/48
  • 2804:269c:fe97::/48
  • 2804:269c:fe79::/48
  • 2804:269c:fe76::/48
  • 2804:269c:fea3::/48
  • 2804:269c:fe63::/48
  • 2804:269c:fe57::/48
  • 2804:269c:fe53::/48
  • 2804:269c:fe49::/48
  • 2804:269c:fe7a::/48
  • 2804:269c:feb9::/48
  • 2804:269c:feba::/48
  • 2804:269c:fec5::/48
  • 2804:269c:fed9::/48
  • 2804:269c:feda::/48
  • 2804:269c:fedc::/48
  • 2804:269c:fedf::/48
  • 2804:269c:fe47::/48
  • 2804:269c:fee5::/48
  • 2804:269c:fe42::/48
  • 2804:269c:fee8::/48
  • 2804:269c:feea::/48
  • 2804:269c:feec::/48
  • 2804:269c:feee::/48
  • 2804:269c:fef5::/48
  • 2804:269c:fef9::/48