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World Map

ASN Full List

Total ASNs: 118,437
AS2505
High Energy Accelerator Research Organization, KEK
AS2507
AS2508
6-10-1 Hakozaki, Higashi-ku, Fukuoka, JAPAN
AS23283
Ameren Corp.
AS2509
AS2510
FUJITSU LIMITED
AS2511
Nippon Telegraph and Telephone Corporation
AS41834
ORG-LG143-RIPE
AS2512
Sugimoto Building.5F, 4-10-15, Masaki, Naka-ku, Nagoya, Aichi 460-0024
AS2513
Japan Science and Technology Agency
AS2514
NTT PC Communications, Inc.
AS2515
Japan Network Information Center
AS400259
VIRION STRATEGIES LLC
AS2516
KDDI CORPORATION
AS2517
AS2518
BIGLOBE Inc.
AS60544
ORG-LRBS1-RIPE
AS2519
ARTERIA Networks Corporation
AS2520
AS2521
AS49303
ORG-NISC2-RIPE
AS2522
Japan Network Information Center
AS2523
Internet Technology Research Consortium
AS2524
13F,3-1-9,Shin-Yokohama,Kouhoku-ku,Yokohama,Kanagawa,Japan
AS2525
AS12891
ORG-GKB1-RIPE
AS2526
Hitachi, Ltd.
AS2527
Sony Network Communications Inc.
AS2528
AS34552
ORG-OM1-RIPE
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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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