IPv4 R&E Routing Table Report 23:05 GMT Sun 07 Dec, 2025 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: 1016153 Prefixes after maximum aggregation (per Origin AS): 393043 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504050 Number of IPv4 prefixes with a valid ROA: 598326 Number of IPv4 prefixes with an invalid ROA: 663 Number of IPv4 prefixes with no ROA: 417164 Total ASes present in the Internet Routing Table: 77503 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66430 Origin ASes announcing only one prefix: 27096 Transit ASes present in the Internet Routing Table: 11073 Transit-only ASes present in the Internet Routing Table: 551 Paths with bogon ASNs present in the IPv4 Routing Table: 18 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 965 Number of instances of unregistered ASNs: 994 Number of 32-bit ASNs allocated by the RIRs: 48170 Number of 32-bit ASNs visible in the Routing Table: 39398 Prefixes from 32-bit ASNs in the Routing Table: 217643 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 439 Number of addresses announced to Internet: 3099660032 Equivalent to 184 /8s, 193 /16s and 15 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 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: 332505 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274841 Total APNIC prefixes after maximum aggregation: 80650 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262351 Unique aggregates announced from the APNIC address blocks: 106123 APNIC Region origin ASes present in the Internet Routing Table: 14875 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4513 APNIC Region transit ASes present in the Internet Routing Table: 1998 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10459 Number of APNIC addresses announced to Internet: 752850688 Equivalent to 44 /8s, 223 /16s and 151 /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: 297381 Total ARIN prefixes after maximum aggregation: 134265 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 297050 Unique aggregates announced from the ARIN address blocks: 145618 ARIN Region origin ASes present in the Internet Routing Table: 19354 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7102 ARIN Region transit ASes present in the Internet Routing Table: 1923 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: 5419 Number of ARIN addresses announced to Internet: 1337325312 Equivalent to 79 /8s, 181 /16s and 247 /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: 281848 Total RIPE prefixes after maximum aggregation: 139803 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282917 Unique aggregates announced from the RIPE address blocks: 183773 RIPE Region origin ASes present in the Internet Routing Table: 29102 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12074 RIPE Region transit ASes present in the Internet Routing Table: 4052 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12850 Number of RIPE addresses announced to Internet: 735697152 Equivalent to 43 /8s, 217 /16s and 217 /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: 125550 Total LACNIC prefixes after maximum aggregation: 30796 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121508 Unique aggregates announced from the LACNIC address blocks: 49725 LACNIC Region origin ASes present in the Internet Routing Table: 11322 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2677 LACNIC Region transit ASes present in the Internet Routing Table: 2543 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9316 Number of LACNIC addresses announced to Internet: 170683392 Equivalent to 10 /8s, 44 /16s and 108 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 35568 Total AfriNIC prefixes after maximum aggregation: 6876 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 51888 Unique aggregates announced from the AfriNIC address blocks: 18434 AfriNIC Region origin ASes present in the Internet Routing Table: 1988 AfriNIC Prefixes per ASN: 26.10 AfriNIC Region origin ASes announcing only one prefix: 730 AfriNIC Region transit ASes present in the Internet Routing Table: 376 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1354 Number of AfriNIC addresses announced to Internet: 102939648 Equivalent to 6 /8s, 34 /16s and 188 /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 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6045 835 590 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3341 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3320 1869 99 VNPT-AS-VN VNPT Corp, VN 24560 2952 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2511 274 1936 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH 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 14275 37209 5403 AMAZON-02, US 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3315 4862 489 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 2874 1231 2152 AKAMAI-AS, US 36352 2824 231 908 AS-COLOCROSSING, US 174 2708 8768 856 COGENT-174, 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 7286 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3990 375 2286 M247, RO 20940 3856 3394 124 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2540 180 1840 CDNEXT, GB 34984 2423 363 575 TELLCOM-AS, TR 8452 1683 1852 14 TE-AS TE-AS, EG 203020 1613 241 784 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12655 3291 583 UNINET, MX 10620 3457 463 1100 Telmex Colombia S.A., CO 13999 2506 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1347 779 211 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1262 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 901 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 1925 368 14 RAYA-AS, EG 36992 1683 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 559 82 3 KENET-AS, KE 15399 551 57 56 WANANCHI-, KE 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 14275 37209 5403 AMAZON-02, US 9808 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12655 3291 583 UNINET, MX 12479 7286 1711 149 UNI2-AS, ES 7545 6045 835 590 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4416 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 13288 13168 CHINAMOBILE-CN China Mobile Communications Grou 8151 12655 12072 UNINET, MX 12479 7286 7137 UNI2-AS, ES 7545 6045 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4416 4392 FPT-AS-AP FPT Telecom Company, VN 9498 4599 4263 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, 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, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, 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 /10:41 /11:94 /12:298 /13:578 /14:1197 /15:2087 /16:13644 /17:8158 /18:13413 /19:24670 /20:44492 /21:51895 /22:112715 /23:104970 /24:637871 /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 6855 12655 UNINET, MX 12479 6216 7286 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2436 14275 AMAZON-02, US 30036 2313 2656 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3457 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) ---------------------------------------------- 1:2446 2:1533 3:977 4:10 5:4940 6:190 7:6 8:1500 9:6 11:172 12:1230 13:571 14:2603 15:414 16:303 17:388 18:913 20:587 21:4 22:188 23:8070 24:2562 25:2 27:2791 29:19 31:3391 32:31 33:1 34:84 35:285 36:4604 37:4549 38:9387 39:1193 40:447 41:4432 42:1948 43:2878 44:400 45:19503 46:5084 47:386 49:2150 50:2050 51:597 52:1567 54:289 55:1099 56:11 57:300 58:2313 59:1328 60:1167 61:3081 62:3094 63:1740 64:5955 65:2123 66:5888 67:3225 68:1494 69:4171 70:1027 71:618 72:3047 74:2924 75:1518 76:600 77:2772 78:1915 79:1781 80:2301 81:2096 82:3835 83:1459 84:2027 85:3641 86:1103 87:2158 88:1346 89:4581 90:840 91:8420 92:2849 93:3012 94:4228 95:4558 96:1444 97:311 98:951 99:775 100:68 101:1353 102:4325 103:32677 104:5495 105:770 106:912 107:2808 108:1198 109:4183 110:2278 111:3916 112:2792 113:1932 114:2098 115:2262 116:2174 117:3137 118:3007 119:2066 120:2378 121:1499 122:2943 123:2283 124:1654 125:2932 126:125 128:1577 129:957 130:1504 131:2259 132:767 133:462 134:1629 135:495 136:1502 137:1144 138:2919 139:1588 140:1722 141:1549 142:2342 143:2128 144:1351 145:629 146:2176 147:2136 148:2789 149:2885 150:1316 151:2619 152:2274 153:767 154:9150 155:2256 156:4232 157:2245 158:1471 159:2693 160:3650 161:1991 162:4002 163:2319 164:1965 165:2618 166:1308 167:2149 168:3868 169:794 170:5431 171:1114 172:4511 173:3421 174:908 175:1352 176:3777 177:4735 178:4289 179:2294 180:2977 181:4350 182:3837 183:2618 184:2050 185:21655 186:5515 187:4782 188:4442 189:4503 190:9692 191:1564 192:11415 193:9497 194:7854 195:5612 196:3282 197:3291 198:6046 199:6091 200:8067 201:6387 202:10436 203:10515 204:4609 205:3668 206:4351 207:3772 208:4256 209:5383 210:4715 211:2679 212:4890 213:4002 214:1027 215:53 216:7055 217:3387 218:1591 219:406 220:2190 221:1285 222:775 223:3198 End of report