{"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":"207.103.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/207.103.0.0-207.103.255.255/","statistics_now":{"registry":"RIPE NCC","status":"allocated (dated 1996-04-16)"},"current_holder":{"rir":"RIPE NCC","org":"Microsoft Limited [ORG-MA42-RIPE]","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":97011,"date":"2023-07-19T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"Microsoft Limited","range":"207.103.0.0/16","log":"RIPE NCC"},{"id":32461,"date":"2023-07-19T14:09:59Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"Information Logistics, Inc","recipient_org":"Microsoft Limited [ORG-MA42-RIPE]","range":"207.103.0.0/16","log":"ARIN"},{"id":30849,"date":"2023-02-28T22:37:10Z","type":"MERGER_ACQUISITION","source_rir":"ARIN","recipient_rir":"ARIN","source_org":"Voicenet","recipient_org":"Information Logistics, Inc","range":"207.103.0.0/16","log":"ARIN"}],"events":[{"event_id":"dc5251b379a3d926","registry":"ARIN","report_date":"2023-07-19","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"207.103.0.0/16","start":"207.103.0.0","end":"207.103.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"Information Logistics, Inc","recipient_organization":"Microsoft Limited [ORG-MA42-RIPE]","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:53+00:00","page":"https://rirtracker.com/ip/207.103.0.0-207.103.255.255/#e-dc5251b379a3d926","report_page":"https://rirtracker.com/arin/reports/2023-07-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/207.103.0.0-207.103.255.255.json","observed":"207.103.0.0/16 allocated on 2023-07-19, not listed on 2023-07-20","same_transfer_as":"d079e3adc514171d","explanation":"ARIN's transfer log records a transfer from Information Logistics, Inc (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2023-07-19 14:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230720.gz","retrieved_at":"2026-10-12T23:24:10+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 207.103.0.0/16 allocated on 2023-07-19, not listed on 2023-07-20"},{"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 2023-07-19 14:09 UTC, Information Logistics, Inc (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC); resources moved: 207.103.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230718.gz","retrieved_at":"2026-10-12T23:24:05+00:00","summary":"ARIN delegated statistics 2023-07-18 (produced 2023-07-18T13:00:10+00:00), before the report: allocated (dated 1996-04-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230720.gz","retrieved_at":"2026-10-12T23:24:10+00:00","summary":"ARIN delegated statistics 2023-07-20 (produced 2023-07-20T13:00:10+00:00), after the report: not listed"}]},{"event_id":"d079e3adc514171d","registry":"RIPE NCC","report_date":"2023-07-19","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"207.103.0.0/16","start":"207.103.0.0","end":"207.103.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"Microsoft Limited","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:36+00:00","page":"https://rirtracker.com/ip/207.103.0.0-207.103.255.255/#e-d079e3adc514171d","report_page":"https://rirtracker.com/ripe/reports/2023-07-19/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/207.103.0.0-207.103.255.255.json","observed":"Transfer: (no name) (ARIN) to Microsoft Limited (RIPE NCC)","same_transfer_as":"dc5251b379a3d926","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2023-07-19 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2023-07-19 19:00 UTC, (no name) (ARIN) to Microsoft Limited (RIPE NCC); resources moved: 207.103.0.0/16"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2023/delegated-ripencc-extended-20230718.bz2","retrieved_at":"2026-10-13T00:07:34+00:00","summary":"RIPE NCC delegated statistics 2023-07-18 (produced 2023-07-18T21:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2023/delegated-ripencc-extended-20230719.bz2","retrieved_at":"2026-10-13T00:07:37+00:00","summary":"RIPE NCC delegated statistics 2023-07-19 (produced 2023-07-19T21:59:59+00:00), after the change: allocated (dated 1996-04-16)"}]},{"event_id":"d498349c794797c6","registry":"ARIN","report_date":"2023-02-28","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"207.103.0.0/16","start":"207.103.0.0","end":"207.103.255.255","classification":"MERGER_ACQUISITION","classification_label":"Merger/acquisition or reorganization","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"ARIN","source_organization":"Voicenet","recipient_organization":"Information Logistics, Inc","inventory_effect":"No effect on ARIN applicant inventory","inventory_effect_code":"NO_EFFECT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:07+00:00","page":"https://rirtracker.com/ip/207.103.0.0-207.103.255.255/#e-d498349c794797c6","report_page":"https://rirtracker.com/arin/reports/2023-02-28/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/207.103.0.0-207.103.255.255.json","observed":"Merger/acquisition: Voicenet (ARIN) to Information Logistics, Inc (ARIN)","explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Voicenet (ARIN) to Information Logistics, Inc (ARIN) on 2023-02-28 22:37 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 2023-02-28 22:37 UTC, Voicenet (ARIN) to Information Logistics, Inc (ARIN); resources moved: 207.103.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230227.gz","retrieved_at":"2026-10-12T23:16:37+00:00","summary":"ARIN delegated statistics 2023-02-27 (produced 2023-02-27T14:00:11+00:00), before the report: allocated (dated 1996-04-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2023/delegated-arin-extended-20230301.gz","retrieved_at":"2026-10-12T23:16:42+00:00","summary":"ARIN delegated statistics 2023-03-01 (produced 2023-03-01T14:00:10+00:00), after the report: allocated (dated 1996-04-16)"}]},{"event_id":"d251aad8bdaa7c14","registry":"ARIN","report_date":"2015-07-07","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"207.103.0.0/16","start":"207.103.0.0","end":"207.103.255.255","classification":"REMOVED_REASON_UNKNOWN","classification_label":"Removed (return, revocation or reclamation not publicly distinguishable)","confidence":"STRONG_INFERENCE","source_rir":null,"recipient_rir":null,"source_organization":null,"recipient_organization":null,"inventory_effect":"Possible future reissue candidate after hold","inventory_effect_code":"HOLD_CANDIDATE","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:01:00+00:00","page":"https://rirtracker.com/ip/207.103.0.0-207.103.255.255/#e-d251aad8bdaa7c14","report_page":"https://rirtracker.com/arin/reports/2015-07-07/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/207.103.0.0-207.103.255.255.json","observed":"207.103.0.0/16 allocated on 2015-07-07, reserved on 2015-07-08","hold":{"hold_rule_source_url":"https://www.arin.net/resources/guide/request/#reissuing-returned-revoked-and-reclaimed-resources","hold_rule_days":60,"estimated_hold_end":"2015-09-05","availability_statement":"Possible reissue candidate after this date; not confirmed available"},"explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 1996-04-16) on 2015-07-06 and reserved on 2015-07-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-09-05. This does not confirm availability.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150708.gz","retrieved_at":"2026-10-12T20:55:14+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 207.103.0.0/16 allocated on 2015-07-07, reserved on 2015-07-08"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150706.gz","retrieved_at":"2026-10-12T20:55:09+00:00","summary":"ARIN delegated statistics 2015-07-06 (produced 2015-07-06T05:05:11+00:00), before the report: allocated (dated 1996-04-16)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2015/delegated-arin-extended-20150708.gz","retrieved_at":"2026-10-12T20:55:14+00:00","summary":"ARIN delegated statistics 2015-07-08 (produced 2015-07-08T05:05:18+00:00), after the report: reserved"}]}],"classification_history":{"dc5251b379a3d926":[{"raw_change_id":451118,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T06:01:41+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Information Logistics, Inc (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2023-07-19 14:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":451118,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:21:53+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Information Logistics, Inc (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2023-07-19 14:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":451118,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T15:05:54+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from Information Logistics, Inc (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2023-07-19 14:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":451118,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:10:53+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from Information Logistics, Inc (ARIN) to Microsoft Limited [ORG-MA42-RIPE] (RIPE NCC) on 2023-07-19 14:09 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}],"d079e3adc514171d":[{"raw_change_id":97481,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T03:01:35+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2023-07-19 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":97481,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:04:20+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2023-07-19 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":97481,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:46:46+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2023-07-19 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":97481,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:49:36+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to Microsoft Limited (RIPE NCC) on 2023-07-19 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}],"d498349c794797c6":[{"raw_change_id":567739,"classification_code":"MERGER_ACQUISITION","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:19:07+00:00","current":1,"public_explanation":"ARIN's transfer log records a merger, acquisition or reorganization from Voicenet (ARIN) to Information Logistics, Inc (ARIN) on 2023-02-28 22:37 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."}],"d251aad8bdaa7c14":[{"raw_change_id":302650,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.0","classified_at":"2026-10-13T04:57:21+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 1996-04-16) on 2015-07-06 and reserved on 2015-07-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-09-05. This does not confirm availability."},{"raw_change_id":302650,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.1","classified_at":"2026-10-13T08:13:40+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 1996-04-16) on 2015-07-06 and reserved on 2015-07-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-09-05. This does not confirm availability."},{"raw_change_id":302650,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.3.2","classified_at":"2026-10-13T14:57:03+00:00","current":0,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 1996-04-16) on 2015-07-06 and reserved on 2015-07-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the earliest estimated hold expiration is 2015-09-05. This does not confirm availability."},{"raw_change_id":302650,"classification_code":"REMOVED_REASON_UNKNOWN","confidence":"STRONG_INFERENCE","classifier_version":"1.4.0","classified_at":"2026-10-14T00:01:00+00:00","current":1,"public_explanation":"Removed from active registration. ARIN-Issued didn't list this; the tracker found it by comparing ARIN's daily statistics. ARIN's statistics show it allocated (dated 1996-04-16) on 2015-07-06 and reserved on 2015-07-08. Public sources do not distinguish a voluntary return, revocation, or reclamation. ARIN holds returned, revoked and reclaimed IPv4 space for 60 days before reissuing it, so the estimated hold end is 2015-09-05. This does not confirm availability."}]},"arin_statistics_now":{"status":"not listed"}}