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World Map

ASN Full List

Total ASNs: 118,436
AS1254
National Aeronautics and Space Administration
AS49101
ORG-TBS13-RIPE
AS1255
Smith College
AS1256
UMASSNET
AS1257
ORG-TA44-RIPE
AS64881
Internet Assigned Numbers Authority
AS1258
XKL, LLC
AS1259
Headquarters, USAISC
AS1260
Air Force Systems Networking
AS1261
National Instruments Corporation
AS1262
National Aeronautics and Space Administration
AS1263
National Aeronautics and Space Administration
AS1264
Headquarters, USAISC
AS1265
Saint Mary's College
AS1266
Navy Network Information Center (NNIC)
AS1267
ORG-IA36-RIPE
AS1268
ORG-IA36-RIPE
AS1269
ORG-IA36-RIPE
AS1270
UUNET Germany
AS1271
Deutsche Telekom Technik GmbH / T-CNF
AS1272
Universitaet Konstanz
AS1274
Germany
AS1275
ORG-DV1-RIPE
AS1276
Advanced Technology Services
AS1277
AS1278
Union Carbide Corporation
AS1279
McDonnell Douglas Information Systems International
AS1280
Internet Systems Consortium, Inc.
AS56008
4th Ring Middle Road, Chaoyang District, Beijing, China
AS1281
Cogent Communications, LLC
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Tools

Subnetting
  • IPv4 Subnet Calculator
  • IPv6 Subnet Calculator
  • Address Count
  • IPv4 CIDR Split
  • IPv6 CIDR Split
CIDR
  • CIDR ↔ Netmask
  • Wildcard Mask
  • IPv4 Range ↔ CIDR
  • IPv6 Range ↔ CIDR
  • Aggregator
  • Difference
  • Overlap
  • Contains
  • Gaps
  • Next Available
IP
  • IPv6 Expand/Compress
  • IPv4 Representations
  • IPv4 ↔ IPv6 (mapped)
  • IPv6 NAT64
  • IPv6 6to4
  • IPv6 Teredo
  • Solicited-Node
  • IPv6 Zone ID
  • MAC ↔ EUI-64
  • ULA Generator
  • Nth IP
  • IP Distance
  • Random IP
  • Enumerate
  • IP Regex
  • Bogon / Reserved IP Checker
DNS
  • DNS Lookup
  • Reverse DNS & FCrDNS
  • WHOIS Lookup
  • PTR Generator
  • TTL Calculator
  • Record Validator
  • CAA Validator
  • SPF / DKIM / DMARC Analyzer
  • EDNS Size
  • Label Normalizer

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