| Number of IPs | 53,504 |
| Number of CIDRs | 13 |
| Registration Date | 1991-12-30 |
| Last Changed Date | 1996-04-11 |
| Abuse Email | [email protected] |
| Abuse Tel | +1-877-789-2877 |
An Autonomous System Number (ASN) contact information refers to the contact details associated with the entity or organization that holds and operates a specific ASN. The contact information typically includes the name of the organization, mailing address, email address, phone number, and other relevant contact details. Here is the contact information for AS1740.
| Technical Tel | +1-619-455-3990 |
| Abuse Tel | +1-877-789-2877 |
| Administrative Tel | +1-877-789-2877 |
| Technical EMAIL | [email protected] |
| Abuse EMAIL | [email protected] |
| Administrative EMAIL | [email protected] |
| Routing Tel | +421 2 332 25571 |
| Routing EMAIL | [email protected] |
An ASN can be associated with one or more CIDR prefixes. This means that an ASN may control one or more CIDR prefixes that will be used to define the IP address space for that autonomous system. Here is the CIDR list for ASN 1740.
| CIDR | NUMS OF IPS |
|---|---|
| 149.17.0.0/24 | 256 |
| 149.17.2.0/23 | 512 |
| 149.17.4.0/22 | 1,024 |
| 149.17.8.0/21 | 2,048 |
| 149.17.16.0/20 | 4,096 |
| 149.17.32.0/19 | 8,192 |
| 149.17.64.0/18 | 16,384 |
| 149.17.128.0/20 | 4,096 |
| 149.17.176.0/20 | 4,096 |
| 149.17.192.0/20 | 4,096 |
| 149.17.224.0/19 | 8,192 |
| 192.102.249.0/24 | 256 |
| 198.137.140.0/24 | 256 |
RDAP stands for Registration Data Access Protocol. It is a protocol used to access and retrieve registration data for internet resources such as domain names, IP addresses, and autonomous system numbers. RDAP has several advantages over the WHOIS protocol, including support for internationalization, secure access to data, and the ability to provide differentiated access to registration data. Here is the RDAP raw data for AS1740.
| Name | CERFNET |
| Registration Date | 1991-12-30 |
| Last Changed Date | 1996-04-11 |
| Technical Tel | +1-619-455-3990 |
| Abuse Tel | +1-877-789-2877 |
| Administrative Tel | +1-877-789-2877 |
| Technical EMAIL | [email protected] |
| Abuse EMAIL | [email protected] |
| Administrative EMAIL | [email protected] |
| Routing Tel | +421 2 332 25571 |
| Routing EMAIL | [email protected] |
1{
2 "rdapConformance": [
3 "nro_rdap_profile_0",
4 "rdap_level_0",
5 "nro_rdap_profile_asn_flat_0"
6 ],
7 "notices": [
8 {
9 "title": "Terms of Service",
10 "description": [
11 "By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
12 ],
13 "links": [
14 {
15 "value": "https://rdap.arin.net/registry/autnum/1740",
16 "rel": "terms-of-service",
17 "type": "text/html",
18 "href": "https://www.arin.net/resources/registry/whois/tou/"
19 }
20 ]
21 },
22 {
23 "title": "Whois Inaccuracy Reporting",
24 "description": [
25 "If you see inaccuracies in the results, please visit: "
26 ],
27 "links": [
28 {
29 "value": "https://rdap.arin.net/registry/autnum/1740",
30 "rel": "inaccuracy-report",
31 "type": "text/html",
32 "href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/"
33 }
34 ]
35 },
36 {
37 "title": "Copyright Notice",
38 "description": [
39 "Copyright 1997-2023, American Registry for Internet Numbers, Ltd."
40 ]
41 }
42 ],
43 "handle": "AS1740",
44 "startAutnum": 1740,
45 "endAutnum": 1740,
46 "name": "CERFNET",
47 "events": [
48 {
49 "eventAction": "last changed",
50 "eventDate": "1996-04-11T12:36:48-04:00"
51 },
52 {
53 "eventAction": "registration",
54 "eventDate": "1991-12-30T00:00:00-05:00"
55 }
56 ],
57 "links": [
58 {
59 "value": "https://rdap.arin.net/registry/autnum/1740",
60 "rel": "self",
61 "type": "application/rdap+json",
62 "href": "https://rdap.arin.net/registry/autnum/1740"
63 },
64 {
65 "value": "https://rdap.arin.net/registry/autnum/1740",
66 "rel": "alternate",
67 "type": "application/xml",
68 "href": "https://whois.arin.net/rest/asn/AS1740"
69 }
70 ],
71 "entities": [
72 {
73 "handle": "CERF",
74 "vcardArray": [
75 "vcard",
76 [
77 [
78 "version",
79 {},
80 "text",
81 "4.0"
82 ],
83 [
84 "fn",
85 {},
86 "text",
87 "CERFnet"
88 ],
89 [
90 "adr",
91 {
92 "label": "5738 Pacific Center Blvd\nSan Diego\nCA\n92121\nUnited States"
93 },
94 "text",
95 [
96 "",
97 "",
98 "",
99 "",
100 "",
101 "",
102 ""
103 ]
104 ],
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106 "kind",
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110 ]
111 ]
112 ],
113 "roles": [
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115 ],
116 "remarks": [
117 {
118 "title": "Registration Comments",
119 "description": [
120 "Contact AT&T Abuse ([email protected]) for policy abuse issues.\r",
121 "All policy abuse issues sent to other POCs will be disregarded."
122 ]
123 }
124 ],
125 "links": [
126 {
127 "value": "https://rdap.arin.net/registry/autnum/1740",
128 "rel": "self",
129 "type": "application/rdap+json",
130 "href": "https://rdap.arin.net/registry/entity/CERF"
131 },
132 {
133 "value": "https://rdap.arin.net/registry/autnum/1740",
134 "rel": "alternate",
135 "type": "application/xml",
136 "href": "https://whois.arin.net/rest/org/CERF"
137 }
138 ],
139 "events": [
140 {
141 "eventAction": "last changed",
142 "eventDate": "2022-02-08T16:54:33-05:00"
143 },
144 {
145 "eventAction": "registration",
146 "eventDate": "1989-04-18T00:00:00-04:00"
147 }
148 ],
149 "entities": [
150 {
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152 "vcardArray": [
153 "vcard",
154 [
155 [
156 "version",
157 {},
158 "text",
159 "4.0"
160 ],
161 [
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163 {
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165 },
166 "text",
167 [
168 "",
169 "",
170 "",
171 "",
172 "",
173 "",
174 ""
175 ]
176 ],
177 [
178 "fn",
179 {},
180 "text",
181 "Network Provisioning"
182 ],
183 [
184 "org",
185 {},
186 "text",
187 "Network Provisioning"
188 ],
189 [
190 "kind",
191 {},
192 "text",
193 "group"
194 ],
195 [
196 "email",
197 {},
198 "text",
199 "[email protected]"
200 ],
201 [
202 "email",
203 {},
204 "text",
205 "[email protected]"
206 ],
207 [
208 "tel",
209 {
210 "type": [
211 "work",
212 "voice"
213 ]
214 },
215 "text",
216 "+1-877-789-2877"
217 ]
218 ]
219 ],
220 "roles": [
221 "technical",
222 "abuse",
223 "administrative"
224 ],
225 "links": [
226 {
227 "value": "https://rdap.arin.net/registry/autnum/1740",
228 "rel": "self",
229 "type": "application/rdap+json",
230 "href": "https://rdap.arin.net/registry/entity/NETWO10-ARIN"
231 },
232 {
233 "value": "https://rdap.arin.net/registry/autnum/1740",
234 "rel": "alternate",
235 "type": "application/xml",
236 "href": "https://whois.arin.net/rest/poc/NETWO10-ARIN"
237 }
238 ],
239 "events": [
240 {
241 "eventAction": "last changed",
242 "eventDate": "2023-01-20T07:26:08-05:00"
243 },
244 {
245 "eventAction": "registration",
246 "eventDate": "2002-09-04T11:06:45-04:00"
247 }
248 ],
249 "status": [
250 "validated"
251 ],
252 "port43": "whois.arin.net",
253 "objectClassName": "entity"
254 },
255 {
256 "handle": "ZS44-ARIN",
257 "vcardArray": [
258 "vcard",
259 [
260 [
261 "version",
262 {},
263 "text",
264 "4.0"
265 ],
266 [
267 "adr",
268 {
269 "label": "7277 164th Ave NE\nAttn: IP Management\nRedmond\nWA\n98052\nUnited States"
270 },
271 "text",
272 [
273 "",
274 "",
275 "",
276 "",
277 "",
278 "",
279 ""
280 ]
281 ],
282 [
283 "fn",
284 {},
285 "text",
286 "IPAdmin-ATT Internet Services"
287 ],
288 [
289 "org",
290 {},
291 "text",
292 "IPAdmin-ATT Internet Services"
293 ],
294 [
295 "kind",
296 {},
297 "text",
298 "group"
299 ],
300 [
301 "email",
302 {},
303 "text",
304 "[email protected]"
305 ],
306 [
307 "email",
308 {},
309 "text",
310 "[email protected]"
311 ],
312 [
313 "tel",
314 {
315 "type": [
316 "work",
317 "voice"
318 ]
319 },
320 "text",
321 "+1-888-510-5545"
322 ]
323 ]
324 ],
325 "roles": [
326 "technical"
327 ],
328 "remarks": [
329 {
330 "title": "Registration Comments",
331 "description": [
332 "For policy abuse issues contact: [email protected]",
333 "For all Legal Inquiries contact:",
334 "AT&T National Compliance Center",
335 "11760 US Hwy 1, Suite 600",
336 "North Palm Beach, FL 33408",
337 "Phone: 1-800-635-6840",
338 "Fax: 1-888-938-4715]",
339 "Email: [email protected]"
340 ]
341 }
342 ],
343 "links": [
344 {
345 "value": "https://rdap.arin.net/registry/autnum/1740",
346 "rel": "self",
347 "type": "application/rdap+json",
348 "href": "https://rdap.arin.net/registry/entity/ZS44-ARIN"
349 },
350 {
351 "value": "https://rdap.arin.net/registry/autnum/1740",
352 "rel": "alternate",
353 "type": "application/xml",
354 "href": "https://whois.arin.net/rest/poc/ZS44-ARIN"
355 }
356 ],
357 "events": [
358 {
359 "eventAction": "last changed",
360 "eventDate": "2022-06-27T11:41:37-04:00"
361 },
362 {
363 "eventAction": "registration",
364 "eventDate": "2000-05-17T16:09:19-04:00"
365 }
366 ],
367 "status": [
368 "validated"
369 ],
370 "port43": "whois.arin.net",
371 "objectClassName": "entity"
372 },
373 {
374 "handle": "DRU40-ARIN",
375 "vcardArray": [
376 "vcard",
377 [
378 [
379 "version",
380 {},
381 "text",
382 "4.0"
383 ],
384 [
385 "adr",
386 {
387 "label": "Rautistr. 75\nZurich\nZH\n8048\nSwitzerland"
388 },
389 "text",
390 [
391 "",
392 "",
393 "",
394 "",
395 "",
396 "",
397 ""
398 ]
399 ],
400 [
401 "fn",
402 {},
403 "text",
404 "Daniel Rueegg"
405 ],
406 [
407 "n",
408 {},
409 "text",
410 [
411 "Rueegg",
412 "Daniel",
413 "",
414 "",
415 ""
416 ]
417 ],
418 [
419 "kind",
420 {},
421 "text",
422 "individual"
423 ],
424 [
425 "email",
426 {},
427 "text",
428 "[email protected]"
429 ],
430 [
431 "email",
432 {},
433 "text",
434 "[email protected]"
435 ],
436 [
437 "tel",
438 {
439 "type": [
440 "work",
441 "voice"
442 ]
443 },
444 "text",
445 "+41 1 4957899;ext899"
446 ]
447 ]
448 ],
449 "roles": [
450 "noc",
451 "technical",
452 "routing"
453 ],
454 "links": [
455 {
456 "value": "https://rdap.arin.net/registry/autnum/1740",
457 "rel": "self",
458 "type": "application/rdap+json",
459 "href": "https://rdap.arin.net/registry/entity/DRU40-ARIN"
460 },
461 {
462 "value": "https://rdap.arin.net/registry/autnum/1740",
463 "rel": "alternate",
464 "type": "application/xml",
465 "href": "https://whois.arin.net/rest/poc/DRU40-ARIN"
466 }
467 ],
468 "events": [
469 {
470 "eventAction": "last changed",
471 "eventDate": "2022-10-24T08:35:29-04:00"
472 },
473 {
474 "eventAction": "registration",
475 "eventDate": "2007-07-30T08:00:06-04:00"
476 }
477 ],
478 "status": [
479 "validated"
480 ],
481 "port43": "whois.arin.net",
482 "objectClassName": "entity"
483 },
484 {
485 "handle": "LEITM2-ARIN",
486 "vcardArray": [
487 "vcard",
488 [
489 [
490 "version",
491 {},
492 "text",
493 "4.0"
494 ],
495 [
496 "adr",
497 {
498 "label": "Tomasikova 64\nBratislava\n\n831 04 \nSlovakia"
499 },
500 "text",
501 [
502 "",
503 "",
504 "",
505 "",
506 "",
507 "",
508 ""
509 ]
510 ],
511 [
512 "fn",
513 {},
514 "text",
515 "Lucia Leitmanova"
516 ],
517 [
518 "n",
519 {},
520 "text",
521 [
522 "Leitmanova",
523 "Lucia",
524 "",
525 "",
526 ""
527 ]
528 ],
529 [
530 "kind",
531 {},
532 "text",
533 "individual"
534 ],
535 [
536 "email",
537 {},
538 "text",
539 "[email protected]"
540 ],
541 [
542 "tel",
543 {
544 "type": [
545 "work",
546 "voice"
547 ]
548 },
549 "text",
550 "+421 2 332 25571 "
551 ]
552 ]
553 ],
554 "roles": [
555 "noc",
556 "technical",
557 "routing"
558 ],
559 "links": [
560 {
561 "value": "https://rdap.arin.net/registry/autnum/1740",
562 "rel": "self",
563 "type": "application/rdap+json",
564 "href": "https://rdap.arin.net/registry/entity/LEITM2-ARIN"
565 },
566 {
567 "value": "https://rdap.arin.net/registry/autnum/1740",
568 "rel": "alternate",
569 "type": "application/xml",
570 "href": "https://whois.arin.net/rest/poc/LEITM2-ARIN"
571 }
572 ],
573 "events": [
574 {
575 "eventAction": "last changed",
576 "eventDate": "2023-02-15T05:58:20-05:00"
577 },
578 {
579 "eventAction": "registration",
580 "eventDate": "2021-02-15T05:21:21-05:00"
581 }
582 ],
583 "status": [
584 "validated"
585 ],
586 "port43": "whois.arin.net",
587 "objectClassName": "entity"
588 }
589 ],
590 "port43": "whois.arin.net",
591 "objectClassName": "entity"
592 },
593 {
594 "handle": "PM200-ARIN",
595 "vcardArray": [
596 "vcard",
597 [
598 [
599 "version",
600 {},
601 "text",
602 "4.0"
603 ],
604 [
605 "adr",
606 {
607 "label": "CERFnet\nP.O. Box 919014\nSan Diego\nCA\n92191-9014\nUnited States"
608 },
609 "text",
610 [
611 "",
612 "",
613 "",
614 "",
615 "",
616 "",
617 ""
618 ]
619 ],
620 [
621 "fn",
622 {},
623 "text",
624 "Pushpendra Mohta"
625 ],
626 [
627 "n",
628 {},
629 "text",
630 [
631 "Mohta",
632 "Pushpendra",
633 "",
634 "",
635 ""
636 ]
637 ],
638 [
639 "kind",
640 {},
641 "text",
642 "individual"
643 ],
644 [
645 "email",
646 {},
647 "text",
648 "[email protected]"
649 ],
650 [
651 "tel",
652 {
653 "type": [
654 "work",
655 "voice"
656 ]
657 },
658 "text",
659 "+1-619-455-3900"
660 ],
661 [
662 "tel",
663 {
664 "type": [
665 "work",
666 "fax"
667 ]
668 },
669 "text",
670 "+1-619-455-3990"
671 ]
672 ]
673 ],
674 "roles": [
675 "technical"
676 ],
677 "remarks": [
678 {
679 "title": "Unvalidated POC",
680 "description": [
681 "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2010-06-19"
682 ]
683 }
684 ],
685 "links": [
686 {
687 "value": "https://rdap.arin.net/registry/autnum/1740",
688 "rel": "self",
689 "type": "application/rdap+json",
690 "href": "https://rdap.arin.net/registry/entity/PM200-ARIN"
691 },
692 {
693 "value": "https://rdap.arin.net/registry/autnum/1740",
694 "rel": "alternate",
695 "type": "application/xml",
696 "href": "https://whois.arin.net/rest/poc/PM200-ARIN"
697 }
698 ],
699 "events": [
700 {
701 "eventAction": "last changed",
702 "eventDate": "1999-07-21T11:08:25-04:00"
703 },
704 {
705 "eventAction": "registration",
706 "eventDate": "1990-04-27T14:37:10-04:00"
707 }
708 ],
709 "port43": "whois.arin.net",
710 "objectClassName": "entity"
711 }
712 ],
713 "port43": "whois.arin.net",
714 "status": [
715 "active"
716 ],
717 "objectClassName": "autnum"
718}The network coverage of AS1740 is worldwide. It covers multiple regions and countries
The AS Name of AS1740 is CERFnet