IPv4 R&E Routing Table Report 23:00 GMT Thu 29 Jan, 2026 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1028420 Prefixes after maximum aggregation (per Origin AS): 395347 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 507913 Number of IPv4 prefixes with a valid ROA: 615086 Number of IPv4 prefixes with an invalid ROA: 601 Number of IPv4 prefixes with no ROA: 412733 Total ASes present in the Internet Routing Table: 77788 Prefixes per ASN: 13.22 Origin-only ASes present in the Internet Routing Table: 66668 Origin ASes announcing only one prefix: 27192 Transit ASes present in the Internet Routing Table: 11120 Transit-only ASes present in the Internet Routing Table: 569 Paths with bogon ASNs present in the IPv4 Routing Table: 42 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1062 Number of instances of unregistered ASNs: 1091 Number of 32-bit ASNs allocated by the RIRs: 48520 Number of 32-bit ASNs visible in the Routing Table: 39715 Prefixes from 32-bit ASNs in the Routing Table: 221627 Number of bogon 32-bit ASNs visible in the Routing Table: 76 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 456 Number of addresses announced to Internet: 3106108672 Equivalent to 185 /8s, 35 /16s and 117 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 334754 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 280992 Total APNIC prefixes after maximum aggregation: 81857 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 267244 Unique aggregates announced from the APNIC address blocks: 107058 APNIC Region origin ASes present in the Internet Routing Table: 14996 APNIC Prefixes per ASN: 17.82 APNIC Region origin ASes announcing only one prefix: 4565 APNIC Region transit ASes present in the Internet Routing Table: 2000 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10573 Number of APNIC addresses announced to Internet: 753752064 Equivalent to 44 /8s, 237 /16s and 88 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 300973 Total ARIN prefixes after maximum aggregation: 135316 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 300704 Unique aggregates announced from the ARIN address blocks: 146175 ARIN Region origin ASes present in the Internet Routing Table: 19364 ARIN Prefixes per ASN: 15.53 ARIN Region origin ASes announcing only one prefix: 7083 ARIN Region transit ASes present in the Internet Routing Table: 1911 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5447 Number of ARIN addresses announced to Internet: 1344220416 Equivalent to 80 /8s, 31 /16s and 45 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 282734 Total RIPE prefixes after maximum aggregation: 140058 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284827 Unique aggregates announced from the RIPE address blocks: 185204 RIPE Region origin ASes present in the Internet Routing Table: 29177 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12122 RIPE Region transit ASes present in the Internet Routing Table: 4065 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12962 Number of RIPE addresses announced to Internet: 733665024 Equivalent to 43 /8s, 186 /16s and 215 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 126095 Total LACNIC prefixes after maximum aggregation: 30507 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 121895 Unique aggregates announced from the LACNIC address blocks: 49483 LACNIC Region origin ASes present in the Internet Routing Table: 11353 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2681 LACNIC Region transit ASes present in the Internet Routing Table: 2556 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9357 Number of LACNIC addresses announced to Internet: 170834688 Equivalent to 10 /8s, 46 /16s and 187 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 36564 Total AfriNIC prefixes after maximum aggregation: 6924 AfriNIC Deaggregation factor: 5.28 Prefixes being announced from the AfriNIC address blocks: 53294 Unique aggregates announced from the AfriNIC address blocks: 19606 AfriNIC Region origin ASes present in the Internet Routing Table: 2011 AfriNIC Prefixes per ASN: 26.50 AfriNIC Region origin ASes announcing only one prefix: 741 AfriNIC Region transit ASes present in the Internet Routing Table: 384 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1376 Number of AfriNIC addresses announced to Internet: 103354624 Equivalent to 6 /8s, 41 /16s and 17 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13615 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6019 832 569 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4721 543 338 BBIL-AP BHARTI Airtel Ltd., IN 18403 4475 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4038 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3726 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3424 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3327 1868 98 VNPT-AS-VN VNPT Corp, VN 17561 3123 196 613 LCS-AS-AP LARUS Limited, HK 24560 2963 865 494 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14002 38804 5442 AMAZON-02 - Amazon.com, Inc., US 22773 4779 3100 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4637 308 1020 CABLEONE - CABLE ONE, INC., US 7155 3858 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3699 1321 71 SHAW - Shaw Communications, CA 174 3629 8768 858 COGENT-174 - Cogent Communications, LLC, 396982 3325 4867 499 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3141 54728 2392 DNIC-AS-00749 - United States Department 16625 2817 1209 2121 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2702 222 893 AS-COLOCROSSING - HostPapa, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7241 1711 149 UNI2-AS, ES 39891 4901 302 71 ALJAWWALSTC-AS, SA 9009 3895 363 2226 M247, RO 20940 3825 3393 111 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2564 182 1863 CDNEXT, GB 34984 2429 364 573 TELLCOM-AS, TR 8452 1710 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1594 241 767 HOSTROYALE, IN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12671 3313 608 UNINET, MX 10620 3444 457 1106 Telmex Colombia S.A., CO 13999 2478 506 350 Mega Cable, S.A. de C.V., MX 11830 1990 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1259 371 22 INTEGRATEL PERU S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 2486 57 TIM SA, BR 18881 914 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1983 646 33 RAYA-AS, EG 36992 1843 1532 339 ETISALAT-MISR, EG 24863 1283 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1146 524 47 Vodafone-, EG 37069 1117 1112 11 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 328608 563 48 174 Africa-on-Cloud-AS, ZA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14002 38804 5442 AMAZON-02 - Amazon.com, Inc., US 9808 13615 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12671 3313 608 UNINET, MX 12479 7241 1711 149 UNI2-AS, ES 7545 6019 832 569 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 302 71 ALJAWWALSTC-AS, SA 22773 4779 3100 365 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 9498 4721 543 338 BBIL-AP BHARTI Airtel Ltd., IN 11492 4637 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4475 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13615 13495 CHINAMOBILE-CN China Mobile Communications Grou 8151 12671 12063 UNINET, MX 12479 7241 7092 UNI2-AS, ES 7545 6019 5450 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4901 4830 ALJAWWALSTC-AS, SA 18403 4475 4451 FPT-AS-AP FPT Telecom Company, VN 22773 4779 4414 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 9498 4721 4383 BBIL-AP BHARTI Airtel Ltd., IN 7552 4038 4009 VIETEL-AS-AP Viettel Group, VN 7155 3858 3773 VIASAT-SP-BACKBONE - ViaSat,Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4 - AT&T En 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3 - Level 3 Parent Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:93 /12:302 /13:578 /14:1195 /15:2088 /16:13670 /17:8195 /18:13485 /19:24735 /20:45078 /21:52097 /22:113299 /23:106179 /24:647356 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6845 12671 UNINET, MX 12479 6169 7241 UNI2-AS, ES 39891 3651 4901 ALJAWWALSTC-AS, SA 11492 3497 4637 CABLEONE - CABLE ONE, INC., US 6327 3479 3699 SHAW - Shaw Communications, CA 22773 3049 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2817 3858 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2458 14002 AMAZON-02 - Amazon.com, Inc., US 30036 2312 2656 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2224 3444 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2511 2:1522 3:980 4:9 5:5096 6:185 7:6 8:1494 9:15 11:172 12:1227 13:620 14:2632 15:420 16:179 17:392 18:918 20:597 21:4 22:188 23:8125 24:2622 25:2 27:2809 29:19 31:3434 32:31 34:84 35:291 36:4665 37:4506 38:10320 39:1258 40:439 41:4525 42:1998 43:2998 44:415 45:19788 46:4922 47:398 48:38 49:2191 50:2047 51:597 52:1258 54:237 55:1118 56:11 57:310 58:2340 59:1362 60:1173 61:3140 62:3099 63:1762 64:6199 65:2104 66:6006 67:3251 68:1489 69:4198 70:1035 71:616 72:3102 74:2967 75:1515 76:596 77:2688 78:1928 79:1804 80:2303 81:2152 82:4019 83:1465 84:2021 85:3689 86:1103 87:2248 88:1341 89:4654 90:823 91:8421 92:2860 93:3004 94:4311 95:4555 96:1444 97:312 98:946 99:784 100:69 101:1581 102:4374 103:32970 104:5391 105:795 106:918 107:2837 108:1217 109:4197 110:2309 111:4067 112:3123 113:1984 114:2168 115:2264 116:2183 117:3373 118:3007 119:2109 120:2668 121:1509 122:2958 123:2288 124:1660 125:2986 126:125 128:1648 129:932 130:1562 131:2337 132:766 133:461 134:1618 135:539 136:1633 137:1356 138:2961 139:1615 140:1757 141:1568 142:2478 143:2169 144:1607 145:630 146:2196 147:2272 148:2785 149:2951 150:1327 151:2663 152:2270 153:890 154:9660 155:2294 156:4580 157:2244 158:1504 159:2753 160:3660 161:1995 162:4037 163:2333 164:1973 165:2645 166:1284 167:2213 168:3927 169:906 170:5484 171:1111 172:4561 173:3433 174:890 175:1364 176:3792 177:4729 178:4369 179:2286 180:3131 181:4399 182:3914 183:2827 184:2010 185:21688 186:5561 187:4856 188:4619 189:4476 190:9677 191:1527 192:11425 193:9505 194:7833 195:5634 196:3255 197:3330 198:6057 199:6100 200:8041 201:6389 202:10597 203:10610 204:4698 205:3715 206:4384 207:3811 208:4351 209:5398 210:4742 211:2690 212:4953 213:4030 214:1075 215:54 216:7142 217:3470 218:1625 219:420 220:2190 221:1311 222:929 223:3307 End of report