IPv4 R&E Routing Table Report 23:00 GMT Mon 18 May, 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: 1046346 Prefixes after maximum aggregation (per Origin AS): 401372 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517149 Number of IPv4 prefixes with a valid ROA: 648075 Number of IPv4 prefixes with an invalid ROA: 474 Number of IPv4 prefixes with no ROA: 397797 Total ASes present in the Internet Routing Table: 78387 Prefixes per ASN: 13.35 Origin-only ASes present in the Internet Routing Table: 67182 Origin ASes announcing only one prefix: 27385 Transit ASes present in the Internet Routing Table: 11205 Transit-only ASes present in the Internet Routing Table: 596 Paths with bogon ASNs present in the IPv4 Routing Table: 41 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 216 Max AS path prepend of ASN (205624) 211 Prefixes from unregistered ASNs in the Routing Table: 1176 Number of instances of unregistered ASNs: 1206 Number of 32-bit ASNs allocated by the RIRs: 49790 Number of 32-bit ASNs visible in the Routing Table: 40589 Prefixes from 32-bit ASNs in the Routing Table: 230230 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 437 Number of addresses announced to Internet: 3103071744 Equivalent to 184 /8s, 245 /16s and 30 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 342324 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 286002 Total APNIC prefixes after maximum aggregation: 82970 APNIC Deaggregation factor: 3.45 Prefixes being announced from the APNIC address blocks: 272070 Unique aggregates announced from the APNIC address blocks: 107903 APNIC Region origin ASes present in the Internet Routing Table: 15160 APNIC Prefixes per ASN: 17.95 APNIC Region origin ASes announcing only one prefix: 4602 APNIC Region transit ASes present in the Internet Routing Table: 2040 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10757 Number of APNIC addresses announced to Internet: 747630080 Equivalent to 44 /8s, 143 /16s and 238 /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: 302031 Total ARIN prefixes after maximum aggregation: 136499 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 301459 Unique aggregates announced from the ARIN address blocks: 147746 ARIN Region origin ASes present in the Internet Routing Table: 19387 ARIN Prefixes per ASN: 15.55 ARIN Region origin ASes announcing only one prefix: 7113 ARIN Region transit ASes present in the Internet Routing Table: 1894 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 216 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5573 Number of ARIN addresses announced to Internet: 1347484928 Equivalent to 80 /8s, 80 /16s and 253 /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, 393216-404380 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: 290000 Total RIPE prefixes after maximum aggregation: 143409 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 293214 Unique aggregates announced from the RIPE address blocks: 191361 RIPE Region origin ASes present in the Internet Routing Table: 29479 RIPE Prefixes per ASN: 9.95 RIPE Region origin ASes announcing only one prefix: 12221 RIPE Region transit ASes present in the Internet Routing Table: 4093 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 44 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13416 Number of RIPE addresses announced to Internet: 733948416 Equivalent to 43 /8s, 191 /16s and 42 /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: 129819 Total LACNIC prefixes after maximum aggregation: 30794 LACNIC Deaggregation factor: 4.22 Prefixes being announced from the LACNIC address blocks: 124241 Unique aggregates announced from the LACNIC address blocks: 50292 LACNIC Region origin ASes present in the Internet Routing Table: 11396 LACNIC Prefixes per ASN: 10.90 LACNIC Region origin ASes announcing only one prefix: 2716 LACNIC Region transit ASes present in the Internet Routing Table: 2593 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: 9449 Number of LACNIC addresses announced to Internet: 169665024 Equivalent to 10 /8s, 28 /16s and 226 /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: 37318 Total AfriNIC prefixes after maximum aggregation: 7015 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 54925 Unique aggregates announced from the AfriNIC address blocks: 19471 AfriNIC Region origin ASes present in the Internet Routing Table: 2027 AfriNIC Prefixes per ASN: 27.10 AfriNIC Region origin ASes announcing only one prefix: 733 AfriNIC Region transit ASes present in the Internet Routing Table: 387 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1394 Number of AfriNIC addresses announced to Internet: 104145152 Equivalent to 6 /8s, 53 /16s and 33 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13894 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5882 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4940 552 330 BBIL-AP BHARTI Airtel Ltd., IN 18403 4533 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4066 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3723 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 17561 3585 225 609 LCS-AS-AP LARUS Limited, HK 56046 3543 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3381 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2737 744 736 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 14940 41321 5682 AMAZON-02 - Amazon.com, Inc., US 22773 4795 3116 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3717 1305 75 SHAW - Shaw Communications, CA 396982 3343 4865 507 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3138 54728 2389 DNIC-AS-00749 - United States Department 36352 2912 222 913 AS-COLOCROSSING - HostPapa, US 7029 2635 2558 892 WINDSTREAM - Windstream Communications LL 30036 2584 356 517 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7128 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 3918 361 2323 M247, RO 20940 3797 3389 109 AKAMAI-ASN1, NL 12389 3138 2321 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2792 205 2063 CDNEXT, GB 34984 2490 367 583 TELLCOM-AS, TR 8452 1690 1852 14 TE-AS TE-AS, EG 203020 1653 252 830 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 12746 3254 631 UNINET, MX 10620 3434 450 1103 Telmex Colombia S.A., CO 13999 2364 498 346 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1448 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1367 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1226 371 22 INTEGRATEL PERU S.A.A., PE 22884 1075 70 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1073 2392 100 TIM SA, 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 2028 649 36 RAYA-AS, EG 36992 1859 1531 342 ETISALAT-MISR, EG 36935 1280 523 45 Vodafone-, EG 24863 1272 389 16 LINKdotNET-AS, EG 36903 1231 555 97 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1078 70 18 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 36914 555 82 3 KENET-AS, KE 328608 555 53 158 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 14940 41321 5682 AMAZON-02 - Amazon.com, Inc., US 9808 13894 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12746 3254 631 UNINET, MX 12479 7128 1711 149 UNI2-AS, ES 7545 5882 826 481 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4940 552 330 BBIL-AP BHARTI Airtel Ltd., IN 22773 4795 3116 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 18403 4533 347 25 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 13894 13773 CHINAMOBILE-CN China Mobile Communications Grou 8151 12746 12115 UNINET, MX 12479 7128 6979 UNI2-AS, ES 7545 5882 5401 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4940 4610 BBIL-AP BHARTI Airtel Ltd., IN 18403 4533 4508 FPT-AS-AP FPT Telecom Company, VN 22773 4795 4428 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4066 4038 VIETEL-AS-AP Viettel Group, VN 7155 3870 3780 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 204248 UNALLOCATED 2.26.168.0/24 1002 BYTEFILTER-AS - Bytefil 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 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 400273 UNALLOCATED 8.41.137.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 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 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 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: 5511 OPENTRANSIT, FR 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 /10:39 /11:95 /12:297 /13:580 /14:1184 /15:2100 /16:13568 /17:8230 /18:13271 /19:25396 /20:45692 /21:52331 /22:113406 /23:108254 /24:661873 /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 6965 12746 UNINET, MX 12479 6065 7128 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3717 SHAW - Shaw Communications, CA 11492 3468 4592 CABLEONE - CABLE ONE, INC., US 22773 3063 4795 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2706 14940 AMAZON-02 - Amazon.com, Inc., US 10620 2238 3434 Telmex Colombia S.A., CO 30036 2238 2584 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2512 2:2035 3:1000 4:5 5:5186 6:201 7:6 8:1469 9:59 11:172 12:1142 13:704 14:2715 15:466 16:214 17:443 18:912 20:591 21:4 22:188 23:8318 24:2774 25:2 27:2808 28:1 29:19 31:3574 32:36 34:89 35:284 36:4797 37:4432 38:9692 39:1300 40:442 41:4571 42:2159 43:3203 44:451 45:19811 46:4864 47:436 48:151 49:2354 50:2007 51:733 52:1328 54:288 55:1109 56:11 57:321 58:2361 59:1380 60:1175 61:3206 62:3119 63:1681 64:6391 65:2155 66:6116 67:3266 68:1511 69:4222 70:1061 71:607 72:3185 74:3054 75:1499 76:599 77:2937 78:2041 79:1790 80:2340 81:2251 82:4144 83:1457 84:2135 85:3853 86:1098 87:2491 88:1335 89:4772 90:795 91:8459 92:2787 93:3029 94:4396 95:4717 96:1438 97:307 98:947 99:837 100:70 101:1624 102:4582 103:32980 104:5377 105:851 106:897 107:2946 108:1267 109:4271 110:2291 111:4123 112:3181 113:1993 114:2383 115:2311 116:2093 117:3487 118:3047 119:2069 120:2731 121:1543 122:3017 123:2285 124:1707 125:3032 126:158 128:1563 129:967 130:1658 131:2490 132:882 133:486 134:1721 135:615 136:1483 137:1362 138:3398 139:1624 140:1773 141:1751 142:2576 143:2040 144:1782 145:639 146:2182 147:2236 148:2802 149:3151 150:1384 151:2911 152:2564 153:1625 154:9700 155:2299 156:5159 157:2405 158:1581 159:2873 160:3844 161:1988 162:4093 163:2585 164:2457 165:2681 166:1280 167:2319 168:4032 169:865 170:5614 171:1136 172:4774 173:3460 174:883 175:1367 176:3952 177:5050 178:4396 179:2374 180:3199 181:4568 182:4042 183:2832 184:2017 185:21878 186:6169 187:5063 188:4525 189:4538 190:9891 191:1999 192:11490 193:9618 194:7864 195:5810 196:3383 197:3338 198:6118 199:6045 200:8116 201:6415 202:10674 203:10644 204:4763 205:3681 206:4371 207:3837 208:4360 209:5421 210:4740 211:2692 212:5081 213:4105 214:1038 215:47 216:7293 217:3608 218:1748 219:415 220:2217 221:1347 222:939 223:3453 End of report