BGP Full View — RIPE RIS RRC00data as of 2026-04-24 21:19

Source: data.ris.ripe.net/rrc00/latest-bview.gz (MRT TABLE_DUMP_V2). For each announced prefix — the distinct origin ASN(s).
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IPv4 prefixes
1 122 923
IPv4 origin ASNs
78 185
IPv4 MOAS
6 325
IPv6 prefixes
254 771
IPv6 origin ASNs
36 403
IPv6 MOAS
1 466

IPv4 prefixes by size /1–/24 only, excl. /0 default

MaskPrefixesAddresses
/8 16
268 435 456
/9 14
117 440 512
/10 39
163 577 856
/11 95
199 229 440
/12 303
317 718 528
/13 586
307 232 768
/14 1 206
316 145 664
/15 2 152
282 066 944
/16 13 827
906 166 272
/17 8 680
284 426 240
/18 13 933
228 278 272
/19 26 602
217 923 584
/20 48 490
198 615 040
/21 55 704
114 081 792
/22 118 650
121 497 600
/23 117 721
60 273 152
/24 709 454
181 620 224
Total 1 117 472 4 284 729 344
BGP /24 coverage of total IPv4 space
Announced in BGP 3 114 114 560 addr 72.51%
Not announced 1 180 852 736 addr 27.49%
↳ technical / special-use (not meant to be announced) 592 634 112 addr 50.19%
↳ routable but not announced 588 218 624 addr 49.81%
    — of total IPv4 space 13.70%
    — of announceable space (total − tech/reserved) 15.89%
Context
Total IPv4 /24 blocks 16 777 216 /24
Reserved + tech /24 (0/8, 10/8, 127/8, 224–255/8, 100.64/10, 169.254/16, 172.16/12, 192.168/16, …) 2 315 269 /24 13.80%
Of those, announced anyway (bogon leaks) 292 /24 0.01%

IPv6 prefixes by size /1–/48 only, addresses as /48 site-counts

MaskPrefixes/48 subnets
/6 1
4 398 046 511 104
/16 1
4 294 967 296
/19 1
536 870 912
/20 14
3 758 096 384
/21 3
402 653 184
/22 6
402 653 184
/23 6
201 326 592
/24 41
687 865 856
/25 13
109 051 904
/26 17
71 303 168
/27 18
37 748 736
/28 163
170 917 888
/29 5 464
2 864 709 632
/30 833
218 365 952
/31 358
46 923 776
/32 26 878
1 761 476 608
/33 5 674
185 925 632
/34 5 534
90 669 056
/35 1 943
15 917 056
/36 9 935
40 693 760
/37 1 389
2 844 672
/38 2 720
2 785 280
/39 1 852
948 224
/40 23 800
6 092 800
/41 1 722
220 416
/42 2 968
189 952
/43 1 444
46 208
/44 25 734
411 744
/45 4 511
36 088
/46 5 844
23 376
/47 8 847
17 694
/48 116 726
116 726
Total 254 460 4 413 958 380 860
IPv4 (1 122 923) IPv6 (254 771)
Reset
Found 524 IPv4 prefixes · ASN: AS17638 · showing 301–524
# Prefix ↑ Mask Range Origin ASN MOAS
301 123.151.89.0/24 /24 123.151.89.0 – 123.151.89.255 AS17638 1
302 123.151.112.0/24 /24 123.151.112.0 – 123.151.112.255 AS17638 1
303 123.151.113.0/24 /24 123.151.113.0 – 123.151.113.255 AS17638 1
304 123.151.126.0/23 /23 123.151.126.0 – 123.151.127.255 AS17638 1
305 123.151.128.0/21 /21 123.151.128.0 – 123.151.135.255 AS17638 1
306 123.151.130.0/23 /23 123.151.130.0 – 123.151.131.255 AS17638 1
307 123.151.146.0/24 /24 123.151.146.0 – 123.151.146.255 AS17638 1
308 123.151.147.0/24 /24 123.151.147.0 – 123.151.147.255 AS17638 1
309 123.151.162.0/24 /24 123.151.162.0 – 123.151.162.255 AS17638 1
310 123.151.163.0/24 /24 123.151.163.0 – 123.151.163.255 AS17638 1
311 123.151.173.0/24 /24 123.151.173.0 – 123.151.173.255 AS17638 1
312 123.151.192.0/19 /19 123.151.192.0 – 123.151.223.255 AS17638 1
313 123.151.224.0/19 /19 123.151.224.0 – 123.151.255.255 AS17638 1
314 125.213.32.0/20 /20 125.213.32.0 – 125.213.47.255 AS17638 1
315 139.220.192.0/23 /23 139.220.192.0 – 139.220.193.255 AS4808, AS17638 2
316 139.220.194.0/23 /23 139.220.194.0 – 139.220.195.255 AS4808, AS17638 2
317 139.220.240.0/22 /22 139.220.240.0 – 139.220.243.255 AS4808, AS17638 2
318 180.212.0.0/15 /15 180.212.0.0 – 180.213.255.255 AS17638 1
319 180.212.0.0/24 /24 180.212.0.0 – 180.212.0.255 AS17638 1
320 180.212.1.0/24 /24 180.212.1.0 – 180.212.1.255 AS17638 1
321 180.212.2.0/23 /23 180.212.2.0 – 180.212.3.255 AS17638 1
322 180.212.4.0/23 /23 180.212.4.0 – 180.212.5.255 AS17638 1
323 180.212.6.0/23 /23 180.212.6.0 – 180.212.7.255 AS17638 1
324 180.212.8.0/22 /22 180.212.8.0 – 180.212.11.255 AS17638 1
325 180.212.12.0/22 /22 180.212.12.0 – 180.212.15.255 AS17638 1
326 180.212.16.0/22 /22 180.212.16.0 – 180.212.19.255 AS17638 1
327 180.212.20.0/23 /23 180.212.20.0 – 180.212.21.255 AS17638 1
328 180.212.24.0/23 /23 180.212.24.0 – 180.212.25.255 AS17638 1
329 180.212.28.0/22 /22 180.212.28.0 – 180.212.31.255 AS17638 1
330 180.212.32.0/24 /24 180.212.32.0 – 180.212.32.255 AS17638 1
331 180.212.33.0/24 /24 180.212.33.0 – 180.212.33.255 AS17638 1
332 180.212.35.0/24 /24 180.212.35.0 – 180.212.35.255 AS17638 1
333 180.212.40.0/22 /22 180.212.40.0 – 180.212.43.255 AS17638 1
334 180.212.44.0/22 /22 180.212.44.0 – 180.212.47.255 AS17638 1
335 180.212.48.0/24 /24 180.212.48.0 – 180.212.48.255 AS17638 1
336 180.212.49.0/24 /24 180.212.49.0 – 180.212.49.255 AS17638 1
337 180.212.50.0/24 /24 180.212.50.0 – 180.212.50.255 AS17638 1
338 180.212.56.0/23 /23 180.212.56.0 – 180.212.57.255 AS17638 1
339 180.212.58.0/23 /23 180.212.58.0 – 180.212.59.255 AS17638 1
340 180.212.64.0/20 /20 180.212.64.0 – 180.212.79.255 AS17638 1
341 180.212.64.0/23 /23 180.212.64.0 – 180.212.65.255 AS17638 1
342 180.212.66.0/23 /23 180.212.66.0 – 180.212.67.255 AS17638 1
343 180.212.68.0/23 /23 180.212.68.0 – 180.212.69.255 AS17638 1
344 180.212.70.0/23 /23 180.212.70.0 – 180.212.71.255 AS17638 1
345 180.212.76.0/23 /23 180.212.76.0 – 180.212.77.255 AS17638 1
346 180.212.78.0/23 /23 180.212.78.0 – 180.212.79.255 AS17638 1
347 180.212.80.0/23 /23 180.212.80.0 – 180.212.81.255 AS17638 1
348 180.212.83.0/24 /24 180.212.83.0 – 180.212.83.255 AS17638 1
349 180.212.84.0/22 /22 180.212.84.0 – 180.212.87.255 AS17638 1
350 180.212.88.0/22 /22 180.212.88.0 – 180.212.91.255 AS17638 1
351 180.212.92.0/22 /22 180.212.92.0 – 180.212.95.255 AS17638 1
352 180.212.96.0/22 /22 180.212.96.0 – 180.212.99.255 AS17638 1
353 180.212.100.0/22 /22 180.212.100.0 – 180.212.103.255 AS17638 1
354 180.212.104.0/22 /22 180.212.104.0 – 180.212.107.255 AS17638 1
355 180.212.108.0/22 /22 180.212.108.0 – 180.212.111.255 AS17638 1
356 180.212.112.0/24 /24 180.212.112.0 – 180.212.112.255 AS17638 1
357 180.212.113.0/24 /24 180.212.113.0 – 180.212.113.255 AS17638 1
358 180.212.114.0/24 /24 180.212.114.0 – 180.212.114.255 AS17638 1
359 180.212.115.0/24 /24 180.212.115.0 – 180.212.115.255 AS17638 1
360 180.212.116.0/23 /23 180.212.116.0 – 180.212.117.255 AS17638 1
361 180.212.118.0/24 /24 180.212.118.0 – 180.212.118.255 AS17638 1
362 180.212.120.0/21 /21 180.212.120.0 – 180.212.127.255 AS17638 1
363 180.212.128.0/22 /22 180.212.128.0 – 180.212.131.255 AS17638 1
364 180.212.132.0/23 /23 180.212.132.0 – 180.212.133.255 AS17638 1
365 180.212.134.0/23 /23 180.212.134.0 – 180.212.135.255 AS17638 1
366 180.212.136.0/23 /23 180.212.136.0 – 180.212.137.255 AS17638 1
367 180.212.138.0/24 /24 180.212.138.0 – 180.212.138.255 AS17638 1
368 180.212.139.0/24 /24 180.212.139.0 – 180.212.139.255 AS17638 1
369 180.212.141.0/24 /24 180.212.141.0 – 180.212.141.255 AS17638 1
370 180.212.142.0/24 /24 180.212.142.0 – 180.212.142.255 AS17638 1
371 180.212.143.0/24 /24 180.212.143.0 – 180.212.143.255 AS17638 1
372 180.212.144.0/23 /23 180.212.144.0 – 180.212.145.255 AS17638 1
373 180.212.146.0/24 /24 180.212.146.0 – 180.212.146.255 AS17638 1
374 180.212.147.0/24 /24 180.212.147.0 – 180.212.147.255 AS17638 1
375 180.212.152.0/23 /23 180.212.152.0 – 180.212.153.255 AS17638 1
376 180.212.155.0/24 /24 180.212.155.0 – 180.212.155.255 AS17638 1
377 180.212.156.0/22 /22 180.212.156.0 – 180.212.159.255 AS17638 1
378 180.212.160.0/23 /23 180.212.160.0 – 180.212.161.255 AS17638 1
379 180.212.162.0/24 /24 180.212.162.0 – 180.212.162.255 AS17638 1
380 180.212.163.0/24 /24 180.212.163.0 – 180.212.163.255 AS17638 1
381 180.212.166.0/23 /23 180.212.166.0 – 180.212.167.255 AS17638 1
382 180.212.168.0/21 /21 180.212.168.0 – 180.212.175.255 AS17638 1
383 180.212.176.0/23 /23 180.212.176.0 – 180.212.177.255 AS17638 1
384 180.212.178.0/23 /23 180.212.178.0 – 180.212.179.255 AS17638 1
385 180.212.182.0/24 /24 180.212.182.0 – 180.212.182.255 AS17638 1
386 180.212.183.0/24 /24 180.212.183.0 – 180.212.183.255 AS17638 1
387 180.212.184.0/22 /22 180.212.184.0 – 180.212.187.255 AS17638 1
388 180.212.188.0/22 /22 180.212.188.0 – 180.212.191.255 AS17638 1
389 180.212.192.0/21 /21 180.212.192.0 – 180.212.199.255 AS17638 1
390 180.212.200.0/21 /21 180.212.200.0 – 180.212.207.255 AS17638 1
391 180.212.208.0/22 /22 180.212.208.0 – 180.212.211.255 AS17638 1
392 180.212.212.0/22 /22 180.212.212.0 – 180.212.215.255 AS17638 1
393 180.212.224.0/23 /23 180.212.224.0 – 180.212.225.255 AS17638 1
394 180.212.226.0/23 /23 180.212.226.0 – 180.212.227.255 AS17638 1
395 180.212.228.0/23 /23 180.212.228.0 – 180.212.229.255 AS17638 1
396 180.212.230.0/23 /23 180.212.230.0 – 180.212.231.255 AS17638 1
397 180.212.232.0/23 /23 180.212.232.0 – 180.212.233.255 AS17638 1
398 180.212.234.0/24 /24 180.212.234.0 – 180.212.234.255 AS17638 1
399 180.212.235.0/24 /24 180.212.235.0 – 180.212.235.255 AS17638 1
400 180.212.236.0/22 /22 180.212.236.0 – 180.212.239.255 AS17638 1
401 180.212.240.0/24 /24 180.212.240.0 – 180.212.240.255 AS17638 1
402 180.212.241.0/24 /24 180.212.241.0 – 180.212.241.255 AS17638 1
403 180.212.242.0/23 /23 180.212.242.0 – 180.212.243.255 AS17638 1
404 180.212.244.0/22 /22 180.212.244.0 – 180.212.247.255 AS17638 1
405 180.212.244.0/23 /23 180.212.244.0 – 180.212.245.255 AS17638 1
406 180.212.248.0/22 /22 180.212.248.0 – 180.212.251.255 AS17638 1
407 180.212.252.0/23 /23 180.212.252.0 – 180.212.253.255 AS17638 1
408 180.212.254.0/24 /24 180.212.254.0 – 180.212.254.255 AS17638 1
409 180.213.10.0/24 /24 180.213.10.0 – 180.213.10.255 AS17638 1
410 180.213.12.0/24 /24 180.213.12.0 – 180.213.12.255 AS17638 1
411 180.213.13.0/24 /24 180.213.13.0 – 180.213.13.255 AS17638 1
412 180.213.16.0/24 /24 180.213.16.0 – 180.213.16.255 AS17638 1
413 180.213.17.0/24 /24 180.213.17.0 – 180.213.17.255 AS17638 1
414 180.213.18.0/24 /24 180.213.18.0 – 180.213.18.255 AS17638 1
415 180.213.19.0/24 /24 180.213.19.0 – 180.213.19.255 AS17638 1
416 180.213.27.0/24 /24 180.213.27.0 – 180.213.27.255 AS17638 1
417 180.213.28.0/24 /24 180.213.28.0 – 180.213.28.255 AS17638 1
418 180.213.29.0/24 /24 180.213.29.0 – 180.213.29.255 AS17638 1
419 180.213.30.0/24 /24 180.213.30.0 – 180.213.30.255 AS17638 1
420 180.213.38.0/24 /24 180.213.38.0 – 180.213.38.255 AS17638 1
421 180.213.68.0/22 /22 180.213.68.0 – 180.213.71.255 AS17638 1
422 180.213.96.0/22 /22 180.213.96.0 – 180.213.99.255 AS17638 1
423 180.213.144.0/22 /22 180.213.144.0 – 180.213.147.255 AS17638 1
424 180.213.148.0/22 /22 180.213.148.0 – 180.213.151.255 AS17638 1
425 202.143.16.0/23 /23 202.143.16.0 – 202.143.17.255 AS17638 1
426 218.30.175.0/24 /24 218.30.175.0 – 218.30.175.255 AS17638 1
427 218.30.189.0/24 /24 218.30.189.0 – 218.30.189.255 AS17638 1
428 219.150.32.0/20 /20 219.150.32.0 – 219.150.47.255 AS17638 1
429 219.150.48.0/20 /20 219.150.48.0 – 219.150.63.255 AS17638 1
430 219.150.50.0/24 /24 219.150.50.0 – 219.150.50.255 AS17638 1
431 219.150.53.0/24 /24 219.150.53.0 – 219.150.53.255 AS17638 1
432 219.150.64.0/20 /20 219.150.64.0 – 219.150.79.255 AS17638 1
433 219.150.80.0/20 /20 219.150.80.0 – 219.150.95.255 AS17638 1
434 219.150.84.0/24 /24 219.150.84.0 – 219.150.84.255 AS17638 1
435 219.150.86.0/24 /24 219.150.86.0 – 219.150.86.255 AS17638 1
436 219.150.96.0/20 /20 219.150.96.0 – 219.150.111.255 AS17638 1
437 219.150.96.0/21 /21 219.150.96.0 – 219.150.103.255 AS17638 1
438 219.150.96.0/24 /24 219.150.96.0 – 219.150.96.255 AS17638 1
439 221.238.0.0/18 /18 221.238.0.0 – 221.238.63.255 AS17638 1
440 221.238.4.0/24 /24 221.238.4.0 – 221.238.4.255 AS17638 1
441 221.238.6.0/24 /24 221.238.6.0 – 221.238.6.255 AS17638 1
442 221.238.11.0/24 /24 221.238.11.0 – 221.238.11.255 AS17638 1
443 221.238.13.0/24 /24 221.238.13.0 – 221.238.13.255 AS17638 1
444 221.238.15.0/24 /24 221.238.15.0 – 221.238.15.255 AS17638 1
445 221.238.33.0/24 /24 221.238.33.0 – 221.238.33.255 AS17638 1
446 221.238.40.0/24 /24 221.238.40.0 – 221.238.40.255 AS17638 1
447 221.238.59.0/24 /24 221.238.59.0 – 221.238.59.255 AS17638 1
448 221.238.64.0/18 /18 221.238.64.0 – 221.238.127.255 AS17638 1
449 221.238.64.0/24 /24 221.238.64.0 – 221.238.64.255 AS17638 1
450 221.238.71.0/24 /24 221.238.71.0 – 221.238.71.255 AS17638 1
451 221.238.82.0/24 /24 221.238.82.0 – 221.238.82.255 AS17638 1
452 221.238.114.0/24 /24 221.238.114.0 – 221.238.114.255 AS17638 1
453 221.238.128.0/18 /18 221.238.128.0 – 221.238.191.255 AS17638 1
454 221.238.140.0/24 /24 221.238.140.0 – 221.238.140.255 AS17638 1
455 221.238.141.0/24 /24 221.238.141.0 – 221.238.141.255 AS17638 1
456 221.238.147.0/24 /24 221.238.147.0 – 221.238.147.255 AS17638 1
457 221.238.148.0/24 /24 221.238.148.0 – 221.238.148.255 AS17638 1
458 221.238.151.0/24 /24 221.238.151.0 – 221.238.151.255 AS17638 1
459 221.238.152.0/24 /24 221.238.152.0 – 221.238.152.255 AS17638 1
460 221.238.153.0/24 /24 221.238.153.0 – 221.238.153.255 AS17638 1
461 221.238.175.0/24 /24 221.238.175.0 – 221.238.175.255 AS17638 1
462 221.238.176.0/24 /24 221.238.176.0 – 221.238.176.255 AS17638 1
463 221.238.187.0/24 /24 221.238.187.0 – 221.238.187.255 AS17638 1
464 221.238.192.0/18 /18 221.238.192.0 – 221.238.255.255 AS17638 1
465 221.238.202.0/24 /24 221.238.202.0 – 221.238.202.255 AS17638 1
466 221.238.203.0/24 /24 221.238.203.0 – 221.238.203.255 AS17638 1
467 221.238.204.0/24 /24 221.238.204.0 – 221.238.204.255 AS17638 1
468 221.238.206.0/24 /24 221.238.206.0 – 221.238.206.255 AS17638 1
469 221.238.208.0/24 /24 221.238.208.0 – 221.238.208.255 AS17638 1
470 221.238.214.0/24 /24 221.238.214.0 – 221.238.214.255 AS17638 1
471 221.238.217.0/24 /24 221.238.217.0 – 221.238.217.255 AS17638 1
472 221.238.219.0/24 /24 221.238.219.0 – 221.238.219.255 AS17638 1
473 221.238.220.0/24 /24 221.238.220.0 – 221.238.220.255 AS17638 1
474 221.238.231.0/24 /24 221.238.231.0 – 221.238.231.255 AS17638 1
475 221.238.232.0/24 /24 221.238.232.0 – 221.238.232.255 AS17638 1
476 221.238.234.0/24 /24 221.238.234.0 – 221.238.234.255 AS17638 1
477 221.238.237.0/24 /24 221.238.237.0 – 221.238.237.255 AS17638 1
478 221.238.240.0/24 /24 221.238.240.0 – 221.238.240.255 AS17638 1
479 221.238.242.0/24 /24 221.238.242.0 – 221.238.242.255 AS17638 1
480 221.239.0.0/18 /18 221.239.0.0 – 221.239.63.255 AS17638 1
481 221.239.0.0/24 /24 221.239.0.0 – 221.239.0.255 AS17638 1
482 221.239.5.0/24 /24 221.239.5.0 – 221.239.5.255 AS17638 1
483 221.239.6.0/24 /24 221.239.6.0 – 221.239.6.255 AS17638 1
484 221.239.8.0/24 /24 221.239.8.0 – 221.239.8.255 AS17638 1
485 221.239.9.0/24 /24 221.239.9.0 – 221.239.9.255 AS17638 1
486 221.239.16.0/24 /24 221.239.16.0 – 221.239.16.255 AS17638 1
487 221.239.18.0/24 /24 221.239.18.0 – 221.239.18.255 AS17638 1
488 221.239.19.0/24 /24 221.239.19.0 – 221.239.19.255 AS17638 1
489 221.239.21.0/24 /24 221.239.21.0 – 221.239.21.255 AS17638 1
490 221.239.23.0/24 /24 221.239.23.0 – 221.239.23.255 AS17638 1
491 221.239.24.0/24 /24 221.239.24.0 – 221.239.24.255 AS17638 1
492 221.239.26.0/24 /24 221.239.26.0 – 221.239.26.255 AS17638 1
493 221.239.27.0/24 /24 221.239.27.0 – 221.239.27.255 AS17638 1
494 221.239.28.0/24 /24 221.239.28.0 – 221.239.28.255 AS17638 1
495 221.239.29.0/24 /24 221.239.29.0 – 221.239.29.255 AS17638 1
496 221.239.30.0/24 /24 221.239.30.0 – 221.239.30.255 AS17638 1
497 221.239.44.0/24 /24 221.239.44.0 – 221.239.44.255 AS17638 1
498 221.239.45.0/24 /24 221.239.45.0 – 221.239.45.255 AS17638 1
499 221.239.53.0/24 /24 221.239.53.0 – 221.239.53.255 AS17638 1
500 221.239.54.0/24 /24 221.239.54.0 – 221.239.54.255 AS17638 1
501 221.239.55.0/24 /24 221.239.55.0 – 221.239.55.255 AS17638 1
502 221.239.57.0/24 /24 221.239.57.0 – 221.239.57.255 AS17638 1
503 221.239.58.0/24 /24 221.239.58.0 – 221.239.58.255 AS17638 1
504 221.239.59.0/24 /24 221.239.59.0 – 221.239.59.255 AS17638 1
505 221.239.62.0/24 /24 221.239.62.0 – 221.239.62.255 AS17638 1
506 221.239.64.0/18 /18 221.239.64.0 – 221.239.127.255 AS17638 1
507 221.239.65.0/24 /24 221.239.65.0 – 221.239.65.255 AS17638 1
508 221.239.66.0/24 /24 221.239.66.0 – 221.239.66.255 AS17638 1
509 221.239.71.0/24 /24 221.239.71.0 – 221.239.71.255 AS17638 1
510 221.239.75.0/24 /24 221.239.75.0 – 221.239.75.255 AS17638 1
511 221.239.86.0/24 /24 221.239.86.0 – 221.239.86.255 AS17638 1
512 221.239.87.0/24 /24 221.239.87.0 – 221.239.87.255 AS17638 1
513 221.239.88.0/24 /24 221.239.88.0 – 221.239.88.255 AS17638 1
514 221.239.89.0/24 /24 221.239.89.0 – 221.239.89.255 AS17638 1
515 221.239.90.0/24 /24 221.239.90.0 – 221.239.90.255 AS17638 1
516 221.239.91.0/24 /24 221.239.91.0 – 221.239.91.255 AS17638 1
517 221.239.93.0/24 /24 221.239.93.0 – 221.239.93.255 AS17638 1
518 221.239.95.0/24 /24 221.239.95.0 – 221.239.95.255 AS17638 1
519 221.239.97.0/24 /24 221.239.97.0 – 221.239.97.255 AS17638 1
520 221.239.101.0/24 /24 221.239.101.0 – 221.239.101.255 AS17638 1
521 221.239.103.0/24 /24 221.239.103.0 – 221.239.103.255 AS17638 1
522 221.239.116.0/24 /24 221.239.116.0 – 221.239.116.255 AS17638 1
523 221.239.117.0/24 /24 221.239.117.0 – 221.239.117.255 AS17638 1
524 221.239.121.0/24 /24 221.239.121.0 – 221.239.121.255 AS17638 1