IPv4 R&E Routing Table Report 23:05 GMT Tue 02 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: 1015963 Prefixes after maximum aggregation (per Origin AS): 393153 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 504032 Number of IPv4 prefixes with a valid ROA: 596213 Number of IPv4 prefixes with an invalid ROA: 672 Number of IPv4 prefixes with no ROA: 419078 Total ASes present in the Internet Routing Table: 77503 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66419 Origin ASes announcing only one prefix: 27104 Transit ASes present in the Internet Routing Table: 11084 Transit-only ASes present in the Internet Routing Table: 547 Paths with bogon ASNs present in the IPv4 Routing Table: 19 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: 974 Number of instances of unregistered ASNs: 1003 Number of 32-bit ASNs allocated by the RIRs: 48116 Number of 32-bit ASNs visible in the Routing Table: 39370 Prefixes from 32-bit ASNs in the Routing Table: 217692 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 444 Number of addresses announced to Internet: 3100511488 Equivalent to 184 /8s, 206 /16s and 13 /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: 332614 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274545 Total APNIC prefixes after maximum aggregation: 80894 APNIC Deaggregation factor: 3.39 Prefixes being announced from the APNIC address blocks: 262166 Unique aggregates announced from the APNIC address blocks: 106179 APNIC Region origin ASes present in the Internet Routing Table: 14861 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4499 APNIC Region transit ASes present in the Internet Routing Table: 1997 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: 10446 Number of APNIC addresses announced to Internet: 753007872 Equivalent to 44 /8s, 225 /16s and 253 /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: 297357 Total ARIN prefixes after maximum aggregation: 134226 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 297052 Unique aggregates announced from the ARIN address blocks: 145548 ARIN Region origin ASes present in the Internet Routing Table: 19357 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7112 ARIN Region transit ASes present in the Internet Routing Table: 1926 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: 5417 Number of ARIN addresses announced to Internet: 1337550592 Equivalent to 79 /8s, 185 /16s and 103 /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: 281974 Total RIPE prefixes after maximum aggregation: 139828 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282831 Unique aggregates announced from the RIPE address blocks: 183764 RIPE Region origin ASes present in the Internet Routing Table: 29111 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12086 RIPE Region transit ASes present in the Internet Routing Table: 4042 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 45 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12837 Number of RIPE addresses announced to Internet: 735874048 Equivalent to 43 /8s, 220 /16s and 140 /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: 125587 Total LACNIC prefixes after maximum aggregation: 30662 LACNIC Deaggregation factor: 4.10 Prefixes being announced from the LACNIC address blocks: 121569 Unique aggregates announced from the LACNIC address blocks: 49670 LACNIC Region origin ASes present in the Internet Routing Table: 11317 LACNIC Prefixes per ASN: 10.74 LACNIC Region origin ASes announcing only one prefix: 2672 LACNIC Region transit ASes present in the Internet Routing Table: 2556 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: 9312 Number of LACNIC addresses announced to Internet: 170722560 Equivalent to 10 /8s, 45 /16s and 5 /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: 35526 Total AfriNIC prefixes after maximum aggregation: 6888 AfriNIC Deaggregation factor: 5.16 Prefixes being announced from the AfriNIC address blocks: 51901 Unique aggregates announced from the AfriNIC address blocks: 18493 AfriNIC Region origin ASes present in the Internet Routing Table: 1997 AfriNIC Prefixes per ASN: 25.99 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 380 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: 1358 Number of AfriNIC addresses announced to Internet: 103126272 Equivalent to 6 /8s, 37 /16s and 149 /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 13498 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6038 832 591 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4589 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4409 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4009 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3712 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3334 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3321 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2949 865 501 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2510 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 14240 37207 5387 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 3305 4861 483 GOOGLE-CLOUD-PLATFORM, US 749 3216 54766 2467 DNIC-AS-00749, US 16625 2867 1228 2147 AKAMAI-AS, US 36352 2824 231 909 AS-COLOCROSSING, US 30036 2658 366 328 MEDIACOM-ENTERPRISE-BUSINESS, 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 7281 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4009 376 2282 M247, RO 20940 3862 3394 124 AKAMAI-ASN1, NL 12389 3144 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2537 180 1837 CDNEXT, GB 34984 2422 363 576 TELLCOM-AS, TR 8452 1700 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 12679 3301 571 UNINET, MX 10620 3458 463 1100 Telmex Colombia S.A., CO 13999 2507 509 348 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1372 2432 263 Claro NXT Telecomunicacoes Ltda, BR 3816 1345 781 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1264 371 22 Telefonica del Peru S.A.A., PE 22884 1055 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1017 2486 56 TIM SA, BR 19037 968 278 29 AMX Argentina S.A., AR 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 1921 368 12 RAYA-AS, EG 36992 1680 1509 399 ETISALAT-MISR, EG 24863 1262 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1084 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1055 522 33 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 37342 536 32 1 MOVITEL, MZ 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 14240 37207 5387 AMAZON-02, US 9808 13498 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12679 3301 571 UNINET, MX 12479 7281 1711 149 UNI2-AS, ES 7545 6038 832 591 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 4589 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4409 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 13498 13381 CHINAMOBILE-CN China Mobile Communications Grou 8151 12679 12108 UNINET, MX 12479 7281 7132 UNI2-AS, ES 7545 6038 5447 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4409 4385 FPT-AS-AP FPT Telecom Company, VN 9498 4589 4253 BBIL-AP BHARTI Airtel Ltd., IN 7552 4009 3981 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 /15:2090 /16:13648 /17:8159 /18:13407 /19:24643 /20:44461 /21:51897 /22:112786 /23:104932 /24:637702 /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 6860 12679 UNINET, MX 12479 6218 7281 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3050 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2432 14240 AMAZON-02, US 30036 2315 2658 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2213 3458 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 2:1538 3:973 4:10 5:4941 6:190 7:6 8:1500 9:6 11:172 12:1231 13:571 14:2611 15:414 16:303 17:388 18:912 20:586 21:4 22:188 23:8068 24:2557 25:2 27:2788 29:19 31:3394 32:31 33:1 34:84 35:286 36:4591 37:4560 38:9376 39:1186 40:446 41:4426 42:1952 43:2879 44:398 45:19568 46:5081 47:383 49:2154 50:2051 51:597 52:1567 54:289 55:1104 56:11 57:300 58:2318 59:1323 60:1168 61:3081 62:3089 63:1739 64:5952 65:2127 66:5923 67:3239 68:1497 69:4180 70:1031 71:618 72:3043 74:2928 75:1515 76:599 77:2768 78:1917 79:1781 80:2298 81:2092 82:3816 83:1462 84:2010 85:3643 86:1103 87:2142 88:1343 89:4580 90:838 91:8433 92:2838 93:3008 94:4222 95:4559 96:1447 97:311 98:955 99:772 100:68 101:1345 102:4324 103:32631 104:5499 105:775 106:906 107:2806 108:1196 109:4239 110:2304 111:3904 112:2784 113:1935 114:2096 115:2245 116:2161 117:3125 118:3038 119:2077 120:2371 121:1500 122:2948 123:2279 124:1651 125:2928 126:125 128:1579 129:959 130:1502 131:2253 132:755 133:462 134:1609 135:482 136:1502 137:1142 138:2895 139:1594 140:1723 141:1546 142:2334 143:2136 144:1348 145:630 146:2179 147:2145 148:2787 149:2880 150:1311 151:2633 152:2275 153:721 154:9160 155:2257 156:4230 157:2230 158:1447 159:2676 160:3660 161:1992 162:3990 163:2324 164:1965 165:2604 166:1299 167:2131 168:3883 169:790 170:5453 171:1116 172:4479 173:3421 174:907 175:1353 176:3774 177:4711 178:4299 179:2305 180:2978 181:4300 182:3835 183:2601 184:2037 185:21685 186:5514 187:4766 188:4439 189:4498 190:9705 191:1575 192:11414 193:9496 194:7855 195:5612 196:3267 197:3298 198:6059 199:6090 200:8076 201:6390 202:10439 203:10502 204:4616 205:3646 206:4377 207:3759 208:4251 209:5390 210:4699 211:2677 212:4887 213:3999 214:1045 215:53 216:7124 217:3381 218:1582 219:406 220:2192 221:1282 222:775 223:3185 End of report