{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other Regional Internet Registry. Classifications and hold-expiration dates are evidence-based interpretations and do not constitute confirmation that a resource is available for issuance or transfer.","resource":"199.192.72.0/21","resource_type":"ipv4","page":"https://rirtracker.com/ip/199.192.72.0-199.192.79.255/","statistics_now":{"registry":"ARIN","status":"allocated (dated 2024-12-12)"},"current_holder":{"rir":"ARIN","org":"Amazon.com, Inc.","how":"ARIN's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":37938,"date":"2024-12-12T17:34:59Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"StackPath ABC, LLC","recipient_org":"Amazon.com, Inc.","range":"199.192.72.0/21","log":"ARIN"},{"id":36655,"date":"2024-09-06T14:47:27Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"StackPath, LLC.","recipient_org":"StackPath ABC, LLC","range":"199.192.72.0/21","log":"ARIN"},{"id":27032,"date":"2022-03-01T19:44:29Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Staminus Communications","recipient_org":"StackPath, LLC.","range":"199.192.72.0/21","log":"ARIN"}],"events":[{"event_id":"22023d1f26dd40c2","registry":"ARIN","report_date":"2024-12-12","source":"arin_issued","raw_action":"ADD","raw_line":"Add 199.192.72.0-199.192.79.255","resource_type":"ipv4","resource":"199.192.72.0/21","start":"199.192.72.0","end":"199.192.79.255","classification":"INTRA_RIR_TRANSFER","classification_label":"Intra-ARIN transfer","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"StackPath ABC, LLC","recipient_organization":"Amazon.com, Inc.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:17+00:00","page":"https://rirtracker.com/ip/199.192.72.0-199.192.79.255/#e-22023d1f26dd40c2","report_page":"https://rirtracker.com/arin/reports/2024-12-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.192.72.0-199.192.79.255.json","explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2024-December/005843.html","retrieved_at":"2026-10-12T18:42:50+00:00","summary":"ARIN-Issued report for 2024-12-12: \"Add 199.192.72.0-199.192.79.255\""},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2024-12-12 17:34 UTC, StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN); resources moved: 199.192.72.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241211.gz","retrieved_at":"2026-10-12T23:51:19+00:00","summary":"ARIN delegated statistics 2024-12-11 (produced 2024-12-11T14:01:07+00:00), before the report: allocated (dated 2012-05-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20241213.gz","retrieved_at":"2026-10-12T23:51:31+00:00","summary":"ARIN delegated statistics 2024-12-13 (produced 2024-12-13T14:01:05+00:00), after the report: allocated (dated 2024-12-12)"}]},{"event_id":"bb61dc83ae3de89a","registry":"ARIN","report_date":"2024-09-06","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"199.192.72.0/21","start":"199.192.72.0","end":"199.192.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"StackPath, LLC.","recipient_organization":"StackPath ABC, LLC","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:16+00:00","page":"https://rirtracker.com/ip/199.192.72.0-199.192.79.255/#e-bb61dc83ae3de89a","report_page":"https://rirtracker.com/arin/reports/2024-09-06/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.192.72.0-199.192.79.255.json","observed":"Merger/acquisition: StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN) on 2024-09-06 14:47 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2024-09-06 14:47 UTC, StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN); resources moved: 199.192.72.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240905.gz","retrieved_at":"2026-10-12T23:46:05+00:00","summary":"ARIN delegated statistics 2024-09-05 (produced 2024-09-05T13:00:52+00:00), before the report: allocated (dated 2012-05-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2024/delegated-arin-extended-20240907.gz","retrieved_at":"2026-10-12T23:46:20+00:00","summary":"ARIN delegated statistics 2024-09-07 (produced 2024-09-07T13:00:52+00:00), after the report: allocated (dated 2012-05-16)"}]},{"event_id":"a21f1b7d709d10e6","registry":"ARIN","report_date":"2022-03-01","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"199.192.72.0/21","start":"199.192.72.0","end":"199.192.79.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Staminus Communications","recipient_organization":"StackPath, LLC.","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:00+00:00","page":"https://rirtracker.com/ip/199.192.72.0-199.192.79.255/#e-a21f1b7d709d10e6","report_page":"https://rirtracker.com/arin/reports/2022-03-01/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.192.72.0-199.192.79.255.json","observed":"Merger/acquisition: Staminus Communications (ARIN) to StackPath, LLC. (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Staminus Communications (ARIN) to StackPath, LLC. (ARIN) on 2022-03-01 19:44 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it.","evidence":[{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: MERGER_ACQUISITION on 2022-03-01 19:44 UTC, Staminus Communications (ARIN) to StackPath, LLC. (ARIN); resources moved: 199.192.72.0/21"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220228.gz","retrieved_at":"2026-10-12T22:57:39+00:00","summary":"ARIN delegated statistics 2022-02-28 (produced 2022-02-28T14:00:11+00:00), before the report: allocated (dated 2012-05-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2022/delegated-arin-extended-20220302.gz","retrieved_at":"2026-10-12T22:57:44+00:00","summary":"ARIN delegated statistics 2022-03-02 (produced 2022-03-02T14:00:11+00:00), after the report: allocated (dated 2012-05-16)"}]},{"event_id":"9347e4fe3f38d2c0","registry":"ARIN","report_date":"2012-05-16","source":"arin_issued","raw_action":"ADD","raw_line":"Add 199.192.72.0-199.192.79.255","resource_type":"ipv4","resource":"199.192.72.0/21","start":"199.192.72.0","end":"199.192.79.255","classification":"APPARENT_NEW_ISSUANCE","classification_label":"Apparent new issuance","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Likely issued from ARIN-controlled inventory","inventory_effect_code":"ISSUED","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:59+00:00","page":"https://rirtracker.com/ip/199.192.72.0-199.192.79.255/#e-9347e4fe3f38d2c0","report_page":"https://rirtracker.com/arin/reports/2012-05-16/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/199.192.72.0-199.192.79.255.json","explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-05-15 and allocated (dated 2012-05-16) on 2012-05-17. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN.","evidence":[{"type":"arin_issued","url":"https://lists.arin.net/pipermail/arin-issued/2012-May/001252.html","retrieved_at":"2026-10-12T18:37:31+00:00","summary":"ARIN-Issued report for 2012-05-16: \"Add 199.192.72.0-199.192.79.255\""},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120515.gz","retrieved_at":"2026-10-12T19:35:35+00:00","summary":"ARIN delegated statistics 2012-05-15, before the report: not issued"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2012/delegated-arin-20120517.gz","retrieved_at":"2026-10-12T19:35:40+00:00","summary":"ARIN delegated statistics 2012-05-17, after the report: allocated (dated 2012-05-16)"}]}],"classification_history":{"22023d1f26dd40c2":[{"raw_change_id":190976,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T04:04:22+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":190976,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:07:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":190976,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:50:46+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."},{"raw_change_id":190976,"classification_code":"INTRA_RIR_TRANSFER","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:54:17+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from StackPath ABC, LLC (ARIN) to Amazon.com, Inc. (ARIN) on 2024-12-12 17:34 UTC. ARIN-Issued lists it as \"Add\" because the registration changed hands; it is not a new allocation from ARIN."}],"bb61dc83ae3de89a":[{"raw_change_id":571654,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:16+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from StackPath, LLC. (ARIN) to StackPath ABC, LLC (ARIN) on 2024-09-06 14:47 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"a21f1b7d709d10e6":[{"raw_change_id":564816,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:00+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Staminus Communications (ARIN) to StackPath, LLC. (ARIN) on 2022-03-01 19:44 UTC. The registration changed hands; it is not a new allocation from ARIN. ARIN-Issued and ARIN's statistics don't show this change; only the transfer log records it."}],"9347e4fe3f38d2c0":[{"raw_change_id":126225,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T03:17:15+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-05-15 and allocated (dated 2012-05-16) on 2012-05-17. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":126225,"classification_code":"APPARENT_REISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:05:24+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-05-15 and allocated (dated 2012-05-16) on 2012-05-17. (Until 2013-03-05, ARIN's statistics list only what's issued.) The tracker saw this range released from hold on 2011-06-06 (69.57.208.0-216.250.127.255), so it appears to have been issued again from ARIN's pool."},{"raw_change_id":126225,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:47:59+00:00","current":0,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-05-15 and allocated (dated 2012-05-16) on 2012-05-17. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."},{"raw_change_id":126225,"classification_code":"APPARENT_NEW_ISSUANCE","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-13T23:50:59+00:00","current":1,"public_explanation":"No transfer record matches. ARIN's statistics show it not issued on 2012-05-15 and allocated (dated 2012-05-16) on 2012-05-17. (Until 2013-03-05, ARIN's statistics list only what's issued.) It moved from ARIN's unissued pool to an active registration dated around the report, so it appears to be newly issued by ARIN."}]},"arin_statistics_now":{"status":"allocated (dated 2024-12-12)"}}